config: add gitproxy GitHub mirror driven by GITPROXY_ADDRESS

Forward GITPROXY_ADDRESS into the build container and auto-select
GITHUB_MIRROR=gitproxy when a CI runner advertises a pass-through git
proxy (exported from NetBox). The gitproxy case points GITHUB_SOURCE at
the proxy so git clones route through it without manual flags.

Signed-off-by: Igor Pecovnik <igor@armbian.com>

Author: igorpecovnik

lib/functions/configuration/main-config.sh

@@ -234,6 +234,11 @@ function do_main_configuration() {
 
 	[[ $USE_GITHUB_UBOOT_MIRROR == yes ]] && UBOOT_MIRROR=github # legacy compatibility?
 
+	# A CI runner that advertises a pass-through git proxy (GITPROXY_ADDRESS,
+	# exported from NetBox by the runner) selects the gitproxy mirror
+	# automatically, unless an explicit GITHUB_MIRROR was already set.
+	[[ -z $GITHUB_MIRROR && -n ${GITPROXY_ADDRESS:-} ]] && GITHUB_MIRROR=gitproxy
+
 	case $GITHUB_MIRROR in
 		fastgit)
 			declare -g -r GITHUB_SOURCE='https://hub.fastgit.xyz'
@@ -242,6 +247,9 @@ function do_main_configuration() {
 			[[ -z $GHPROXY_ADDRESS ]] && GHPROXY_ADDRESS=ghfast.top
 			declare -g -r GITHUB_SOURCE="https://${GHPROXY_ADDRESS}/https://github.com"
 			;;
+		gitproxy)
+			declare -g -r GITHUB_SOURCE="${GITPROXY_ADDRESS}"
+			;;
 		gitclone)
 			declare -g -r GITHUB_SOURCE='https://gitclone.com/github.com'
 			;;

lib/functions/host/docker.sh

@@ -451,6 +451,7 @@ function docker_cli_prepare_launch() {
 		"--env" "no_proxy=${no_proxy:-${NO_PROXY:-}}"
 		"--env" "NO_PROXY=${NO_PROXY:-${no_proxy:-}}"
 		"--env" "APT_PROXY_ADDR=${APT_PROXY_ADDR:-}"
+		"--env" "GITPROXY_ADDRESS=${GITPROXY_ADDRESS:-}"
 	)
 
 	# Pass in host DNS server so container can resolve hostnames on proxy