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Copilotlpcox
Copilot
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authored
feat: add github copilot api proxy support (#945)
* Initial plan * feat(api-proxy): add copilot api proxy support - Add copilotApiKey to WrapperConfig type - Update CLI to read COPILOT_API_KEY from environment - Add GitHub Copilot proxy endpoint on port 10002 in api-proxy server - Pass COPILOT_API_KEY to api-proxy container - Set COPILOT_API_URL and COPILOT_TOKEN in agent container - Exclude COPILOT_API_KEY from agent environment when api-proxy enabled Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * test(api-proxy): add copilot proxy integration tests Add integration tests for GitHub Copilot API proxy: - Health check endpoint test - COPILOT_API_URL environment variable test - COPILOT_TOKEN placeholder test - Health providers reporting test Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * feat(examples): enable api-proxy and debug logging in copilot example - Enable --enable-api-proxy flag to use Copilot API proxy - Set AWF_ONE_SHOT_TOKEN_DEBUG=1 for debug output - Add COPILOT_API_KEY environment variable check - Update domain list to use api.githubcopilot.com (proxied) - Add --log-level debug for verbose output Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * feat(workflows): enable copilot api-proxy in smoke test - Add --enable-api-proxy flag to awf command - Set COPILOT_API_KEY environment variable from secrets - Set AWF_ONE_SHOT_TOKEN_DEBUG=1 for debug logging - Update validation to check both COPILOT_GITHUB_TOKEN and COPILOT_API_KEY Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * fix(docker-manager): configure one-shot-token protection for sensitive tokens Set AWF_ONE_SHOT_TOKENS to protect COPILOT_GITHUB_TOKEN and other sensitive tokens. The C implementation of one-shot-token requires this env var to be configured with the list of tokens to protect. Without it, tokens like COPILOT_GITHUB_TOKEN were not being cached/protected and remained fully accessible in the agent. Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * fix(workflows): include api-proxy logs in smoke-copilot artifacts - Add /tmp/gh-aw/sandbox/firewall/api-proxy-logs/ to artifact upload - Fix permissions for api-proxy-logs directory before upload - API proxy logs were being written to a sibling directory of firewall logs Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * fix(docker-manager): exclude copilot_github_token from agent when api-proxy enabled COPILOT_GITHUB_TOKEN is now excluded from the agent environment when --enable-api-proxy is used, ensuring no GitHub tokens are exposed to the agent container. This follows the credential isolation pattern where sensitive credentials are not passed to the agent when using the API proxy. Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * feat(agent): add copilot api proxy health check with url logging Add health check for GitHub Copilot API proxy configuration that: - Logs COPILOT_API_URL value at container startup - Verifies COPILOT_API_KEY and COPILOT_GITHUB_TOKEN are excluded - Validates COPILOT_TOKEN is placeholder value - Tests connectivity to the proxy endpoint Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * feat(docker-manager): set copilot_github_token placeholder for one-shot protection Instead of excluding COPILOT_GITHUB_TOKEN entirely, set it to a placeholder value that gets protected by the one-shot-token library (already in hard-coded defaults). Changes: - Remove COPILOT_GITHUB_TOKEN from EXCLUDED_ENV_VARS - Set COPILOT_GITHUB_TOKEN=placeholder-token-for-credential-isolation in agent - Update health check to validate placeholder value (not absence) - COPILOT_GITHUB_TOKEN is already in both C and Rust one-shot-token defaults Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * fix(docker-manager): set copilot_github_token placeholder before env-all Move COPILOT_GITHUB_TOKEN placeholder initialization to before --env-all logic to prevent the real token from overriding the placeholder value. Changes: - Set COPILOT_GITHUB_TOKEN placeholder early (right after environment init) - Add copilot-pre-exec-check.sh script for pre-execution validation - Run validation before Copilot CLI executes in smoke test - Validates COPILOT_API_URL is set and COPILOT_GITHUB_TOKEN is placeholder Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * fix(workflows): remove copilot pre-exec check, rely on health check Remove copilot-pre-exec-check.sh script and revert to simple execution pattern that matches Claude/Codex workflows. The existing api-proxy-health-check.sh already validates configuration at container startup. Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * fix(cli): add api proxy status logging for debugging Add info-level logging to show which API keys are detected when api-proxy is enabled. Update health check message to include COPILOT_API_URL. This helps diagnose configuration issues when API keys aren't being read. Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> * fix: replace copilot_api_key with copilot_github_token Change implementation to use COPILOT_GITHUB_TOKEN directly instead of a separate COPILOT_API_KEY. This aligns with how Copilot authentication actually works - there's only one GitHub token, not two separate credentials. Changes: - Renamed copilotApiKey to copilotGithubToken in types - CLI now reads COPILOT_GITHUB_TOKEN from environment - API proxy reads COPILOT_GITHUB_TOKEN and uses it for Authorization header - Removed COPILOT_API_KEY from excluded env vars (no longer used) - Removed COPILOT_API_KEY from AWF_ONE_SHOT_TOKENS list - Updated tests to use COPILOT_GITHUB_TOKEN - Updated example script - Updated workflow to only require COPILOT_GITHUB_TOKEN secret Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>
1 parent 0956330 commit 132609b

8 files changed

Lines changed: 241 additions & 22 deletions

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‎.github/workflows/smoke-copilot.lock.yml‎

Lines changed: 4 additions & 1 deletion
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‎containers/agent/api-proxy-health-check.sh‎

Lines changed: 44 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -91,6 +91,49 @@ if [ -n "$OPENAI_BASE_URL" ]; then
9191
fi
9292
fi
9393

94+
# Check GitHub Copilot configuration
95+
if [ -n "$COPILOT_API_URL" ]; then
96+
API_PROXY_CONFIGURED=true
97+
echo "[health-check] Checking GitHub Copilot API proxy configuration..."
98+
echo "[health-check] COPILOT_API_URL=$COPILOT_API_URL"
99+
100+
# Verify COPILOT_GITHUB_TOKEN is placeholder (protected by one-shot-token)
101+
if [ -n "$COPILOT_GITHUB_TOKEN" ]; then
102+
if [ "$COPILOT_GITHUB_TOKEN" != "placeholder-token-for-credential-isolation" ]; then
103+
echo "[health-check][ERROR] COPILOT_GITHUB_TOKEN contains non-placeholder value!"
104+
echo "[health-check][ERROR] Token should be 'placeholder-token-for-credential-isolation'"
105+
exit 1
106+
fi
107+
echo "[health-check] ✓ COPILOT_GITHUB_TOKEN is placeholder value (correct)"
108+
fi
109+
110+
# Verify COPILOT_TOKEN is placeholder (if present)
111+
if [ -n "$COPILOT_TOKEN" ]; then
112+
if [ "$COPILOT_TOKEN" != "placeholder-token-for-credential-isolation" ]; then
113+
echo "[health-check][ERROR] COPILOT_TOKEN contains non-placeholder value!"
114+
echo "[health-check][ERROR] Token should be 'placeholder-token-for-credential-isolation'"
115+
exit 1
116+
fi
117+
echo "[health-check] ✓ COPILOT_TOKEN is placeholder value (correct)"
118+
fi
119+
120+
# Perform health check using API URL
121+
echo "[health-check] Testing connectivity to GitHub Copilot API proxy at $COPILOT_API_URL..."
122+
123+
# Extract host and port from API URL (format: http://IP:PORT)
124+
PROXY_HOST=$(echo "$COPILOT_API_URL" | sed -E 's|^https?://([^:]+):.*|\1|')
125+
PROXY_PORT=$(echo "$COPILOT_API_URL" | sed -E 's|^https?://[^:]+:([0-9]+).*|\1|')
126+
127+
# Test TCP connectivity with timeout
128+
if timeout 5 bash -c "cat < /dev/null > /dev/tcp/$PROXY_HOST/$PROXY_PORT" 2>/dev/null; then
129+
echo "[health-check] ✓ GitHub Copilot API proxy is reachable at $COPILOT_API_URL"
130+
else
131+
echo "[health-check][ERROR] Cannot connect to GitHub Copilot API proxy at $COPILOT_API_URL"
132+
echo "[health-check][ERROR] Proxy may not be running or network is blocked"
133+
exit 1
134+
fi
135+
fi
136+
94137
# Summary
95138
if [ "$API_PROXY_CONFIGURED" = "true" ]; then
96139
echo "[health-check] =========================================="
@@ -99,7 +142,7 @@ if [ "$API_PROXY_CONFIGURED" = "true" ]; then
99142
echo "[health-check] ✓ Connectivity established"
100143
echo "[health-check] =========================================="
101144
else
102-
echo "[health-check] No API proxy configured (ANTHROPIC_BASE_URL and OPENAI_BASE_URL not set)"
145+
echo "[health-check] No API proxy configured (ANTHROPIC_BASE_URL, OPENAI_BASE_URL, and COPILOT_API_URL not set)"
103146
echo "[health-check] Skipping health checks"
104147
fi
105148

‎containers/api-proxy/server.js‎

Lines changed: 29 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -45,6 +45,7 @@ function sanitizeForLog(str) {
4545
// Read API keys from environment (set by docker-compose)
4646
const OPENAI_API_KEY = process.env.OPENAI_API_KEY;
4747
const ANTHROPIC_API_KEY = process.env.ANTHROPIC_API_KEY;
48+
const COPILOT_GITHUB_TOKEN = process.env.COPILOT_GITHUB_TOKEN;
4849

4950
// Squid proxy configuration (set via HTTP_PROXY/HTTPS_PROXY in docker-compose)
5051
const HTTPS_PROXY = process.env.HTTPS_PROXY || process.env.HTTP_PROXY;
@@ -57,6 +58,9 @@ if (OPENAI_API_KEY) {
5758
if (ANTHROPIC_API_KEY) {
5859
console.log('[API Proxy] Anthropic API key configured');
5960
}
61+
if (COPILOT_GITHUB_TOKEN) {
62+
console.log('[API Proxy] GitHub Copilot token configured');
63+
}
6064

6165
// Create proxy agent for routing through Squid
6266
const proxyAgent = HTTPS_PROXY ? new HttpsProxyAgent(HTTPS_PROXY) : undefined;
@@ -169,7 +173,7 @@ if (OPENAI_API_KEY) {
169173
status: 'healthy',
170174
service: 'awf-api-proxy',
171175
squid_proxy: HTTPS_PROXY || 'not configured',
172-
providers: { openai: true, anthropic: !!ANTHROPIC_API_KEY },
176+
providers: { openai: true, anthropic: !!ANTHROPIC_API_KEY, copilot: !!COPILOT_GITHUB_TOKEN },
173177
}));
174178
return;
175179
}
@@ -193,7 +197,7 @@ if (OPENAI_API_KEY) {
193197
status: 'healthy',
194198
service: 'awf-api-proxy',
195199
squid_proxy: HTTPS_PROXY || 'not configured',
196-
providers: { openai: false, anthropic: !!ANTHROPIC_API_KEY },
200+
providers: { openai: false, anthropic: !!ANTHROPIC_API_KEY, copilot: !!COPILOT_GITHUB_TOKEN },
197201
}));
198202
return;
199203
}
@@ -231,6 +235,29 @@ if (ANTHROPIC_API_KEY) {
231235
});
232236
}
233237

238+
239+
// GitHub Copilot API proxy (port 10002)
240+
if (COPILOT_GITHUB_TOKEN) {
241+
const copilotServer = http.createServer((req, res) => {
242+
// Health check endpoint
243+
if (req.url === '/health' && req.method === 'GET') {
244+
res.writeHead(200, { 'Content-Type': 'application/json' });
245+
res.end(JSON.stringify({ status: 'healthy', service: 'copilot-proxy' }));
246+
return;
247+
}
248+
249+
// Log and proxy the request
250+
console.log(`[Copilot Proxy] ${sanitizeForLog(req.method)} ${sanitizeForLog(req.url)}`);
251+
console.log(`[Copilot Proxy] Injecting Authorization header with COPILOT_GITHUB_TOKEN`);
252+
proxyRequest(req, res, 'api.githubcopilot.com', {
253+
'Authorization': `Bearer ${COPILOT_GITHUB_TOKEN}`,
254+
});
255+
});
256+
257+
copilotServer.listen(10002, '0.0.0.0', () => {
258+
console.log('[API Proxy] GitHub Copilot proxy listening on port 10002');
259+
});
260+
}
234261
// Graceful shutdown
235262
process.on('SIGTERM', () => {
236263
console.log('[API Proxy] Received SIGTERM, shutting down gracefully...');

‎examples/github-copilot.sh‎

Lines changed: 23 additions & 10 deletions
Original file line numberDiff line numberDiff line change
@@ -1,39 +1,52 @@
11
#!/bin/bash
2-
# Example: Using GitHub Copilot CLI with the firewall
2+
# Example: Using GitHub Copilot CLI with the firewall and API proxy
33
#
4-
# This example shows how to run GitHub Copilot CLI through the firewall.
5-
# Copilot requires access to several GitHub domains.
4+
# This example shows how to run GitHub Copilot CLI through the firewall
5+
# with credential isolation via the API proxy sidecar.
66
#
77
# Prerequisites:
88
# - GitHub Copilot CLI installed: npm install -g @github/copilot
9-
# - GITHUB_TOKEN environment variable set
9+
# - COPILOT_API_KEY environment variable set (for API proxy)
10+
# - GITHUB_TOKEN environment variable set (for GitHub API access)
1011
#
1112
# Usage: sudo -E ./examples/github-copilot.sh
1213

1314
set -e
1415

15-
echo "=== AWF GitHub Copilot CLI Example ==="
16+
echo "=== AWF GitHub Copilot CLI Example (with API Proxy) ==="
1617
echo ""
1718

19+
# Check for COPILOT_API_KEY
20+
if [ -z "$COPILOT_API_KEY" ]; then
21+
echo "Error: COPILOT_API_KEY environment variable is not set"
22+
echo "Set it with: export COPILOT_API_KEY='your_copilot_api_key'"
23+
exit 1
24+
fi
25+
1826
# Check for GITHUB_TOKEN
1927
if [ -z "$GITHUB_TOKEN" ]; then
2028
echo "Error: GITHUB_TOKEN environment variable is not set"
2129
echo "Set it with: export GITHUB_TOKEN='your_token'"
2230
exit 1
2331
fi
2432

25-
echo "Running GitHub Copilot CLI through the firewall..."
33+
# Enable one-shot-token debug logging
34+
export AWF_ONE_SHOT_TOKEN_DEBUG=1
35+
36+
echo "Running GitHub Copilot CLI with API proxy and debug logging enabled..."
2637
echo ""
2738

28-
# Run Copilot CLI with required domains
29-
# Use sudo -E to preserve environment variables (especially GITHUB_TOKEN)
39+
# Run Copilot CLI with API proxy enabled
40+
# Use sudo -E to preserve environment variables (COPILOT_GITHUB_TOKEN, GITHUB_TOKEN, AWF_ONE_SHOT_TOKEN_DEBUG)
3041
# Required domains:
42+
# - api.githubcopilot.com: Copilot API endpoint (proxied via api-proxy)
3143
# - github.com: GitHub API access
3244
# - api.github.com: GitHub REST API
33-
# - api.enterprise.githubcopilot.com: Copilot API endpoint
3445
# - registry.npmjs.org: NPM package registry (for npx)
3546
sudo -E awf \
36-
--allow-domains github.com,api.github.com,api.enterprise.githubcopilot.com,registry.npmjs.org \
47+
--enable-api-proxy \
48+
--allow-domains api.githubcopilot.com,github.com,api.github.com,registry.npmjs.org \
49+
--log-level debug \
3750
-- 'npx @github/copilot --prompt "What is 2+2?" --no-mcp'
3851

3952
echo ""

‎src/cli.ts‎

Lines changed: 18 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -262,12 +262,14 @@ export interface ApiProxyValidationResult {
262262
* @param enableApiProxy - Whether --enable-api-proxy flag was provided
263263
* @param hasOpenaiKey - Whether an OpenAI API key is present
264264
* @param hasAnthropicKey - Whether an Anthropic API key is present
265+
* @param hasCopilotKey - Whether a GitHub Copilot API key is present
265266
* @returns ApiProxyValidationResult with warnings and debug messages
266267
*/
267268
export function validateApiProxyConfig(
268269
enableApiProxy: boolean,
269270
hasOpenaiKey?: boolean,
270-
hasAnthropicKey?: boolean
271+
hasAnthropicKey?: boolean,
272+
hasCopilotKey?: boolean
271273
): ApiProxyValidationResult {
272274
if (!enableApiProxy) {
273275
return { enabled: false, warnings: [], debugMessages: [] };
@@ -276,16 +278,19 @@ export function validateApiProxyConfig(
276278
const warnings: string[] = [];
277279
const debugMessages: string[] = [];
278280

279-
if (!hasOpenaiKey && !hasAnthropicKey) {
281+
if (!hasOpenaiKey && !hasAnthropicKey && !hasCopilotKey) {
280282
warnings.push('⚠️ API proxy enabled but no API keys found in environment');
281-
warnings.push(' Set OPENAI_API_KEY or ANTHROPIC_API_KEY to use the proxy');
283+
warnings.push(' Set OPENAI_API_KEY, ANTHROPIC_API_KEY, or COPILOT_GITHUB_TOKEN to use the proxy');
282284
}
283285
if (hasOpenaiKey) {
284286
debugMessages.push('OpenAI API key detected - will be held securely in sidecar');
285287
}
286288
if (hasAnthropicKey) {
287289
debugMessages.push('Anthropic API key detected - will be held securely in sidecar');
288290
}
291+
if (hasCopilotKey) {
292+
debugMessages.push('GitHub Copilot API key detected - will be held securely in sidecar');
293+
}
289294

290295
return { enabled: true, warnings, debugMessages };
291296
}
@@ -987,6 +992,7 @@ program
987992
enableApiProxy: options.enableApiProxy,
988993
openaiApiKey: process.env.OPENAI_API_KEY,
989994
anthropicApiKey: process.env.ANTHROPIC_API_KEY,
995+
copilotGithubToken: process.env.COPILOT_GITHUB_TOKEN,
990996
};
991997

992998
// Warn if --env-all is used
@@ -1025,8 +1031,15 @@ program
10251031
const apiProxyValidation = validateApiProxyConfig(
10261032
config.enableApiProxy || false,
10271033
!!config.openaiApiKey,
1028-
!!config.anthropicApiKey
1034+
!!config.anthropicApiKey,
1035+
!!config.copilotGithubToken
10291036
);
1037+
1038+
// Log API proxy status at info level for visibility
1039+
if (config.enableApiProxy) {
1040+
logger.info(`API proxy enabled: OpenAI=${!!config.openaiApiKey}, Anthropic=${!!config.anthropicApiKey}, Copilot=${!!config.copilotGithubToken}`);
1041+
}
1042+
10301043
for (const warning of apiProxyValidation.warnings) {
10311044
logger.warn(warning);
10321045
}
@@ -1038,7 +1051,7 @@ program
10381051
// to prevent sensitive data from flowing to logger (CodeQL sensitive data logging)
10391052
const redactedConfig: Record<string, unknown> = {};
10401053
for (const [key, value] of Object.entries(config)) {
1041-
if (key === 'openaiApiKey' || key === 'anthropicApiKey') continue;
1054+
if (key === 'openaiApiKey' || key === 'anthropicApiKey' || key === 'copilotGithubToken') continue;
10421055
redactedConfig[key] = key === 'agentCommand' ? redactSecrets(value as string) : value;
10431056
}
10441057
logger.debug('Configuration:', JSON.stringify(redactedConfig, null, 2));

‎src/docker-manager.ts‎

Lines changed: 25 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -334,6 +334,7 @@ export function generateDockerCompose(
334334
EXCLUDED_ENV_VARS.add('CODEX_API_KEY');
335335
EXCLUDED_ENV_VARS.add('ANTHROPIC_API_KEY');
336336
EXCLUDED_ENV_VARS.add('CLAUDE_API_KEY');
337+
// COPILOT_GITHUB_TOKEN gets a placeholder (not excluded), protected by one-shot-token
337338
}
338339

339340
// Start with required/overridden environment variables
@@ -346,8 +347,18 @@ export function generateDockerCompose(
346347
SQUID_PROXY_PORT: SQUID_PORT.toString(),
347348
HOME: homeDir,
348349
PATH: '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin',
350+
// Configure one-shot-token library with sensitive tokens to protect
351+
// These tokens are cached on first access and unset from /proc/self/environ
352+
AWF_ONE_SHOT_TOKENS: 'COPILOT_GITHUB_TOKEN,GITHUB_TOKEN,GH_TOKEN,GITHUB_API_TOKEN,GITHUB_PAT,GH_ACCESS_TOKEN,OPENAI_API_KEY,OPENAI_KEY,ANTHROPIC_API_KEY,CLAUDE_API_KEY,CODEX_API_KEY',
349353
};
350354

355+
// When api-proxy is enabled with Copilot, set placeholder tokens early
356+
// so --env-all won't override them with real values from host environment
357+
if (config.enableApiProxy && config.copilotGithubToken) {
358+
environment.COPILOT_GITHUB_TOKEN = 'placeholder-token-for-credential-isolation';
359+
logger.debug('COPILOT_GITHUB_TOKEN set to placeholder value (early) to prevent --env-all override');
360+
}
361+
351362
// When host access is enabled, bypass the proxy for the host gateway IPs.
352363
// MCP Streamable HTTP (SSE) traffic through Squid crashes it (comm.cc:1583),
353364
// so MCP gateway traffic must go directly to the host, not through Squid.
@@ -421,6 +432,7 @@ export function generateDockerCompose(
421432
if (process.env.OPENAI_API_KEY && !config.enableApiProxy) environment.OPENAI_API_KEY = process.env.OPENAI_API_KEY;
422433
if (process.env.CODEX_API_KEY && !config.enableApiProxy) environment.CODEX_API_KEY = process.env.CODEX_API_KEY;
423434
if (process.env.ANTHROPIC_API_KEY && !config.enableApiProxy) environment.ANTHROPIC_API_KEY = process.env.ANTHROPIC_API_KEY;
435+
// COPILOT_GITHUB_TOKEN is handled separately - gets placeholder when api-proxy enabled
424436
if (process.env.USER) environment.USER = process.env.USER;
425437
if (process.env.TERM) environment.TERM = process.env.TERM;
426438
if (process.env.XDG_CONFIG_HOME) environment.XDG_CONFIG_HOME = process.env.XDG_CONFIG_HOME;
@@ -950,6 +962,7 @@ export function generateDockerCompose(
950962
// Pass API keys securely to sidecar (not visible to agent)
951963
...(config.openaiApiKey && { OPENAI_API_KEY: config.openaiApiKey }),
952964
...(config.anthropicApiKey && { ANTHROPIC_API_KEY: config.anthropicApiKey }),
965+
...(config.copilotGithubToken && { COPILOT_GITHUB_TOKEN: config.copilotGithubToken }),
953966
// Route through Squid to respect domain whitelisting
954967
HTTP_PROXY: `http://${networkConfig.squidIp}:${SQUID_PORT}`,
955968
HTTPS_PROXY: `http://${networkConfig.squidIp}:${SQUID_PORT}`,
@@ -1013,6 +1026,18 @@ export function generateDockerCompose(
10131026
environment.CLAUDE_CODE_API_KEY_HELPER = '/usr/local/bin/get-claude-key.sh';
10141027
logger.debug('Claude Code API key helper configured: /usr/local/bin/get-claude-key.sh');
10151028
}
1029+
if (config.copilotGithubToken) {
1030+
environment.COPILOT_API_URL = `http://${networkConfig.proxyIp}:10002`;
1031+
logger.debug(`GitHub Copilot API will be proxied through sidecar at http://${networkConfig.proxyIp}:10002`);
1032+
1033+
// Set placeholder token for GitHub Copilot CLI compatibility
1034+
// Real authentication happens via COPILOT_API_URL pointing to api-proxy
1035+
environment.COPILOT_TOKEN = 'placeholder-token-for-credential-isolation';
1036+
logger.debug('COPILOT_TOKEN set to placeholder value for credential isolation');
1037+
1038+
// Note: COPILOT_GITHUB_TOKEN placeholder is set early (before --env-all)
1039+
// to prevent override by host environment variable
1040+
}
10161041

10171042
logger.info('API proxy sidecar enabled - API keys will be held securely in sidecar container');
10181043
logger.info('API proxy will route through Squid to respect domain whitelisting');

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