Add CI action to release to GHCR

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

.github/workflows/docker.yml

@@ -0,0 +1,56 @@
+name: ci
+on:
+  push:
+    branches:
+      - main
+  release:
+  pull_request: #dev only, remove me!!!
+
+
+jobs:
+  build-test:
+    name: build
+    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: Run a ko build
+        run: just build
+        env:
+          KO_DOCKER_REPO: ghcr.io/cofide/cofidectl-debug-container
+      - name: Tag the image with the release tag
+        if: github.event_name == 'release'
+        run: |
+          docker tag ghcr.io/cofide/cofidectl-debug-container:latest ghcr.io/cofide/cofidectl-debug-container:${GITHUB_REF#refs/tags/}
+      - name: Tag the image with the commit hash
+        if: github.event_name != 'release'
+        run: |
+          docker tag ghcr.io/cofide/cofidectl-debug-container:latest ghcr.io/cofide/cofidectl-debug-container:${GITHUB_SHA}
+      - name: Login to GitHub Container Registry
+        run: |
+          echo ${{ secrets.GITHUB_TOKEN }} | docker login ghcr.io -u cofide --password-stdin
+      - name: Push the release tag
+        if: github.event_name == 'release'
+        run: |
+          docker push ghcr.io/cofide/cofidectl-debug-container:${GITHUB_REF#refs/tags/}
+      - name: Push the commit hash
+        if: github.event_name == 'release'
+        run: |
+          docker push ghcr.io/cofide/cofidectl-debug-container:${GITHUB_SHA}