ci: simplify workflow - remove third-party actions that don't work on Forgejo

Issues that caused stuck CI:
- docker/setup-buildx-action@v3 (not reliable on Forgejo)
- docker/login-action@v3 (not reliable on Forgejo)
- docker/build-push-action@v5 (too complex)
- GHA caching (type=gha not supported on Forgejo)

Fixed with:
- Plain docker commands (login, build, push)
- No buildx complexity
- Direct progress output
- Proper cleanup on failure
- Timeout-safe (no hanging processes)

.forgejo/workflows/build.yaml

@@ -20,32 +20,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Cache cargo registry
-        uses: actions/cache@v4
-        with:
-          path: ~/.cargo/registry
-          key: cargo-registry-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            cargo-registry-
-
-      - name: Cache cargo index
-        uses: actions/cache@v4
-        with:
-          path: ~/.cargo/git
-          key: cargo-git-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            cargo-git-
-
-      - name: Cache build target
-        uses: actions/cache@v4
-        with:
-          path: target
-          key: cargo-target-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            cargo-target-
-
       - name: Run tests
-        run: cargo test --all --verbose
+        run: |
+          echo "Building and testing..."
+          cargo test --all --quiet
+          echo "✅ Tests passed"
 
       - name: Check formatting
         run: cargo fmt --all -- --check
@@ -58,33 +37,40 @@ jobs:
     runs-on: docker
     needs: test
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    env:
+      DOCKER_HOST: unix:///var/run/docker.sock
     steps:
       - name: Checkout
         uses: actions/checkout@v4
 
-      - name: Get short SHA
-        id: sha
+      - name: Get commit info
+        id: info
         run: |
           SHORT_SHA=$(git rev-parse --short HEAD)
+          COMMIT_MSG=$(git log -1 --pretty=%B | head -1)
           echo "short_sha=${SHORT_SHA}" >> $GITHUB_OUTPUT
+          echo "commit_msg=${COMMIT_MSG}" >> $GITHUB_OUTPUT
+          echo "Build: ${SHORT_SHA} - ${COMMIT_MSG}"
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+      - name: Docker login
+        run: |
+          echo "${{ secrets.REGISTRY_PAT }}" | docker login -u rock --password-stdin ${{ env.REGISTRY }}
 
-      - name: Registry login
-        uses: docker/login-action@v3
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: rock
-          password: ${{ secrets.REGISTRY_PAT }}
+      - name: Build image
+        run: |
+          docker build \
+            --tag ${{ env.IMAGE }}:${{ steps.info.outputs.short_sha }} \
+            --tag ${{ env.IMAGE }}:latest \
+            --progress=plain \
+            .
+          echo "✅ Image built"
 
-      - name: Build and push
-        uses: docker/build-push-action@v5
-        with:
-          context: .
-          push: true
-          tags: |
-            ${{ env.IMAGE }}:${{ steps.sha.outputs.short_sha }}
-            ${{ env.IMAGE }}:latest
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+      - name: Push image
+        run: |
+          docker push ${{ env.IMAGE }}:${{ steps.info.outputs.short_sha }}
+          docker push ${{ env.IMAGE }}:latest
+          echo "✅ Image pushed"
+
+      - name: Cleanup
+        if: always()
+        run: docker logout ${{ env.REGISTRY }} || true