Add cache to container build (#35697)

add mount cache directives to container builds, which speeds up local
builds bypassing node and go package download entirely on second build
and caching go compilation.
drop job level split on regular/rootless, which allows to reuse the
previously made stage for rootless, skipping duplicate builds in CI.

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

.github/workflows/release-nightly.yml

@@ -56,7 +56,7 @@ jobs:
       - name: upload binaries to s3
         run: |
           aws s3 sync dist/release s3://${{ secrets.AWS_S3_BUCKET }}/gitea/${{ steps.clean_name.outputs.branch }} --no-progress
-  nightly-docker-rootful:
+  nightly-container:
     runs-on: namespace-profile-gitea-release-docker
     permissions:
       packages: write # to publish to ghcr.io
@@ -65,10 +65,6 @@ jobs:
       # fetch all commits instead of only the last as some branches are long lived and could have many between versions
       # fetch all tags to ensure that "git describe" reports expected Gitea version, eg. v1.21.0-dev-1-g1234567
       - run: git fetch --unshallow --quiet --tags --force
-      - uses: actions/setup-go@v6
-        with:
-          go-version-file: go.mod
-          check-latest: true
       - uses: docker/setup-qemu-action@v3
       - uses: docker/setup-buildx-action@v3
       - name: Get cleaned branch name
@@ -76,6 +72,29 @@ jobs:
         run: |
           REF_NAME=$(echo "${{ github.ref }}" | sed -e 's/refs\/heads\///' -e 's/refs\/tags\///' -e 's/release\/v//')
           echo "branch=${REF_NAME}-nightly" >> "$GITHUB_OUTPUT"
+      - uses: docker/metadata-action@v5
+        id: meta
+        with:
+          images: |-
+            gitea/gitea
+            ghcr.io/go-gitea/gitea
+          tags: |
+            type=raw,value=${{ steps.clean_name.outputs.branch }}
+          annotations: |
+            org.opencontainers.image.authors="maintainers@gitea.io"
+      - uses: docker/metadata-action@v5
+        id: meta_rootless
+        with:
+          images: |-
+            gitea/gitea
+            ghcr.io/go-gitea/gitea
+          # each tag below will have the suffix of -rootless
+          flavor: |
+            suffix=-rootless
+          tags: |
+            type=raw,value=${{ steps.clean_name.outputs.branch }}
+          annotations: |
+            org.opencontainers.image.authors="maintainers@gitea.io"
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
@@ -87,57 +106,20 @@ jobs:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - name: fetch go modules
-        run: make vendor
-      - name: build rootful docker image
+      - name: build regular docker image
         uses: docker/build-push-action@v5
         with:
           context: .
           platforms: linux/amd64,linux/arm64,linux/riscv64
           push: true
-          tags: |-
-            gitea/gitea:${{ steps.clean_name.outputs.branch }}
-            ghcr.io/go-gitea/gitea:${{ steps.clean_name.outputs.branch }}
-  nightly-docker-rootless:
-    runs-on: namespace-profile-gitea-release-docker
-    permissions:
-      packages: write # to publish to ghcr.io
-    steps:
-      - uses: actions/checkout@v5
-      # fetch all commits instead of only the last as some branches are long lived and could have many between versions
-      # fetch all tags to ensure that "git describe" reports expected Gitea version, eg. v1.21.0-dev-1-g1234567
-      - run: git fetch --unshallow --quiet --tags --force
-      - uses: actions/setup-go@v6
-        with:
-          go-version-file: go.mod
-          check-latest: true
-      - uses: docker/setup-qemu-action@v3
-      - uses: docker/setup-buildx-action@v3
-      - name: Get cleaned branch name
-        id: clean_name
-        run: |
-          REF_NAME=$(echo "${{ github.ref }}" | sed -e 's/refs\/heads\///' -e 's/refs\/tags\///' -e 's/release\/v//')
-          echo "branch=${REF_NAME}-nightly" >> "$GITHUB_OUTPUT"
-      - name: Login to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: Login to GHCR using PAT
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-      - name: fetch go modules
-        run: make vendor
+          tags: ${{ steps.meta.outputs.tags }}
+          annotations: ${{ steps.meta.outputs.annotations }}
       - name: build rootless docker image
         uses: docker/build-push-action@v5
         with:
           context: .
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64,linux/arm64,linux/riscv64
           push: true
           file: Dockerfile.rootless
-          tags: |-
-            gitea/gitea:${{ steps.clean_name.outputs.branch }}-rootless
-            ghcr.io/go-gitea/gitea:${{ steps.clean_name.outputs.branch }}-rootless
+          tags: ${{ steps.meta_rootless.outputs.tags }}
+          annotations: ${{ steps.meta_rootless.outputs.annotations }}