build docker image, attempt 1

.github/workflows/build-app-image.yml

@@ -0,0 +1,57 @@
+name: App Image CI
+
+on:
+  push:
+    branches:
+      - master
+
+
+jobs:
+  build_app_image:
+    name: Build app image
+    runs-on: ubuntu-latest
+    env:
+      GH_REGISTRY: git.sanin.dev
+      IMAGE_NAME: ${{ github.repository }}
+      REPOSITORY: ${{ github.event.repository.name }}
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout
+        uses: https://github.com/actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: https://github.com/docker/setup-buildx-action@v3
+        with:
+          install: true
+
+      - name: Login to GitHub Container Registry
+        uses: https://github.com/docker/login-action@v3
+        with:
+          registry: ${{ env.GH_REGISTRY }}
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata for Docker image
+        if: "!startsWith(github.ref, 'refs/tags/v')"
+        id: meta
+        uses: https://github.com/docker/metadata-action@v5
+        with:
+          images: |
+            ${{ env.GH_REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+
+      - name: Build and push develop Docker image
+        uses: https://github.com/docker/build-push-action@v6
+        with:
+          target: deploy
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64
+          cache-from: type=gha,scope=${{ github.workflow }}
+          cache-to: type=gha,mode=max,scope=${{ github.workflow }}