Add create-repo example (#260)

Shows how you could add images (actually, repos) to your Chainguard
organization with your own code.

Author: ribbybibby

create-repo/README.md

@@ -0,0 +1,42 @@
+# Create Repository
+
+An example of adding an image to your Chainguard organization with the
+Chainguard Go SDK.
+
+## Usage
+
+1. Build the example.
+
+```
+go build -o create-repo main.go
+```
+
+2. Login with `chainctl`. The example will reuse the token this creates for
+   authentication.
+
+```
+chainctl auth login
+```
+
+3. Create the repository. This will add the `nginx` image to your organization.
+
+```
+./create-repo -parent your.org -repo nginx
+```
+
+## Assumable Identity
+
+Rather than relying on `chainctl` for authentication, the example can assume an
+identity.
+
+Refer to [the
+documentation](https://edu.chainguard.dev/chainguard/administration/assumable-ids/)
+for examples of how to create an assumable identity.
+
+```
+./create-repo \
+    -parent your.org \
+    -repo nginx \
+    -identity <identity-id> \
+    -identity-token <identity-token>
+```

create-repo/go.mod

@@ -0,0 +1,69 @@
+module github.com/chainguard-dev/platform-examples/create-repo
+
+go 1.25.0
+
+require chainguard.dev/sdk v0.1.50
+
+require (
+	chainguard.dev/apko v1.1.3 // indirect
+	chainguard.dev/go-grpc-kit v0.17.15 // indirect
+	cloud.google.com/go/auth v0.18.1 // indirect
+	cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect
+	cloud.google.com/go/compute/metadata v0.9.0 // indirect
+	dario.cat/mergo v1.0.1 // indirect
+	github.com/Microsoft/go-winio v0.6.2 // indirect
+	github.com/ProtonMail/go-crypto v1.3.0 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/bits-and-blooms/bitset v1.24.4 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/chainguard-dev/clog v1.8.0 // indirect
+	github.com/cloudflare/circl v1.6.1 // indirect
+	github.com/cyphar/filepath-securejoin v0.4.1 // indirect
+	github.com/emirpasic/gods v1.18.1 // indirect
+	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
+	github.com/go-git/go-billy/v5 v5.6.2 // indirect
+	github.com/go-git/go-git/v5 v5.16.4 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/golang/groupcache v0.0.0-20241129210726-2c02b8208cf8 // indirect
+	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/google/go-containerregistry v0.20.7 // indirect
+	github.com/google/s2a-go v0.1.9 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/googleapis/enterprise-certificate-proxy v0.3.11 // indirect
+	github.com/googleapis/gax-go/v2 v2.16.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware/providers/prometheus v1.1.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware/v2 v2.3.3 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.3 // indirect
+	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
+	github.com/kelseyhightower/envconfig v1.4.0 // indirect
+	github.com/kevinburke/ssh_config v1.2.0 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pjbgf/sha1cd v0.3.2 // indirect
+	github.com/prometheus/client_golang v1.23.2 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.66.1 // indirect
+	github.com/prometheus/procfs v0.16.1 // indirect
+	github.com/sergi/go-diff v1.4.0 // indirect
+	github.com/skeema/knownhosts v1.3.1 // indirect
+	github.com/xanzy/ssh-agent v0.3.3 // indirect
+	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.63.0 // indirect
+	go.opentelemetry.io/otel v1.39.0 // indirect
+	go.opentelemetry.io/otel/metric v1.39.0 // indirect
+	go.opentelemetry.io/otel/trace v1.39.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	golang.org/x/crypto v0.47.0 // indirect
+	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
+	golang.org/x/net v0.49.0 // indirect
+	golang.org/x/oauth2 v0.34.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
+	golang.org/x/text v0.33.0 // indirect
+	google.golang.org/api v0.264.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20251202230838-ff82c1b0f217 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260122232226-8e98ce8d340d // indirect
+	google.golang.org/grpc v1.78.0 // indirect
+	google.golang.org/protobuf v1.36.11 // indirect
+	gopkg.in/warnings.v0 v0.1.2 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)