Add CI action to release to GHCR

Signed-off-by: Maartje Eyskens <[email protected]>

.github/workflows/docker.yml

@@ -0,0 +1,46 @@
+name: docker-image
+on:
+  push:
+    branches:
+      - main
+      - release-ghcr
+  release:
+
+
+jobs:
+  build-test:
+    name: build
+    permissions:
+      contents: read
+      packages: write
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install just
+        uses: taiki-e/install-action@just
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+      - name: Create Kind Cluster
+        uses: helm/kind-action@v1
+        with:
+          cluster_name: kind
+      - name: Install ko
+        uses: ko-build/[email protected]
+        env:
+          KO_DOCKER_REPO: kind.local
+      - name: Install dependencies
+        run: |
+          go mod download
+      - name: Set KO_TAG to the current commit
+        run: echo "KO_TAG=$(git rev-parse HEAD)" >> $GITHUB_ENV
+      - name: Set KO_TAG to version if it is a release
+        if: github.event_name == 'release'
+        run: echo "KO_TAG=$(echo $GITHUB_REF | cut -d / -f 3)" >> $GITHUB_ENV
+      - name: Run a ko build
+        run: just build
+        env:
+          KO_DOCKER_REPO: ghcr.io/cofide/cofidectl-debug-container/cmd
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Justfile

@@ -4,6 +4,7 @@ set shell := ["bash", "-euo", "pipefail", "-c"]
 
 export KO_DOCKER_REPO := env_var_or_default("KO_DOCKER_REPO", "kind.local")
 export KIND_CLUSTER_NAME := env_var_or_default("KIND_CLUSTER_NAME", "kind")
+export KO_TAG := env_var_or_default("KO_TAG", "latest")
 
 lint *args:
     golangci-lint run --show-stats {{args}}
@@ -20,4 +21,4 @@ check-deps:
 
 # Build application
 build: check-deps
-    ko build github.com/cofide/cofidectl-debug-container/cmd
+    ko build --bare --tags="$KO_TAG" github.com/cofide/cofidectl-debug-container/cmd