docker: improve image layout and backend-only/frontend-only images (#2071)

* docker: improve image layout and backend-only image

* add tests

* add tests

* add frontend

* add frontend

* label

* fix

.github/workflows/docker-build.yml

@@ -54,6 +54,28 @@ jobs:
           tags: ${{ env.TAGS }}
       - name: Wait for Docker Hub to propagate
         run: sleep 120
+      - name: Build and push (backend)
+        if: ${{ inputs.release_type == 'main' }}
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          file: ./docker/build_and_push_backend.Dockerfile
+          build-args: |
+            LANGFLOW_IMAGE=langflowai/langflow:${{ inputs.version }}
+          tags: |
+            langflowai/langflow-backend:${{ inputs.version }}
+            langflowai/langflow-backend:1.0-alpha
+      - name: Build and push (frontend)
+        if: ${{ inputs.release_type == 'main' }}
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          file: ./docker/frontend/build_and_push_frontend.Dockerfile
+          tags: |
+            langflowai/langflow-frontend:${{ inputs.version }}
+            langflowai/langflow-frontend:1.0-alpha
 
   restart-space:
     runs-on: ubuntu-latest

.github/workflows/docker_test.yml

@@ -0,0 +1,61 @@
+name: Test Docker images
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - "docker/**"
+      - "poetry.lock"
+      - "pyproject.toml"
+      - "src/backend/**"
+  pull_request:
+    branches: [dev]
+    paths:
+      - "docker/**"
+      - "poetry.lock"
+      - "pyproject.toml"
+      - "src/**"
+
+env:
+  POETRY_VERSION: "1.8.2"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build image
+        run: |
+          docker build -t langflowai/langflow:latest-dev \
+            -f docker/build_and_push.Dockerfile \
+            .
+      - name: Test image
+        run: |
+          expected_version=$(cat pyproject.toml | grep version | head -n 1 | cut -d '"' -f 2)
+          version=$(docker run --rm --entrypoint bash langflowai/langflow:latest-dev -c 'python -c "from langflow.version import __version__ as langflow_version; print(langflow_version)"')
+          if [ "$expected_version" != "$version" ]; then
+              echo "Expected version: $expected_version"
+              echo "Actual version: $version"
+              exit 1
+          fi
+
+      - name: Build backend image
+        run: |
+          docker build -t langflowai/langflow-backend:latest-dev \
+            --build-arg LANGFLOW_IMAGE=langflowai/langflow:latest-dev \
+            -f docker/build_and_push_backend.Dockerfile \
+            .
+      - name: Test backend image
+        run: |
+          expected_version=$(cat pyproject.toml | grep version | head -n 1 | cut -d '"' -f 2)
+          version=$(docker run --rm --entrypoint bash langflowai/langflow-backend:latest-dev -c 'python -c "from langflow.version import __version__ as langflow_version; print(langflow_version)"')
+          if [ "$expected_version" != "$version" ]; then
+              echo "Expected version: $expected_version"
+              echo "Actual version: $version"
+              exit 1
+          fi
+      - name: Build frontend image
+        run: |
+          docker build -t langflowai/langflow-frontend:latest-dev \
+            -f docker/frontend/build_and_push_frontend.Dockerfile \
+            .

.github/workflows/pre-release-langflow.yml

@@ -82,6 +82,28 @@ jobs:
           tags: |
             langflowai/langflow:${{ needs.release.outputs.version }}
             langflowai/langflow:1.0-alpha
+      - name: Build and push (frontend)
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          file: ./docker/frontend/build_and_push_frontend.Dockerfile
+          tags: |
+            langflowai/langflow-frontend:${{ needs.release.outputs.version }}
+            langflowai/langflow-frontend:1.0-alpha
+      - name: Wait for Docker Hub to propagate
+        run: sleep 120
+      - name: Build and push (backend)
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          file: ./docker/build_and_push_backend.Dockerfile
+          build-args: |
+            LANGFLOW_IMAGE=langflowai/langflow:${{ needs.release.outputs.version }}
+          tags: |
+            langflowai/langflow-backend:${{ needs.release.outputs.version }}
+            langflowai/langflow-backend:1.0-alpha
 
   create_release:
     name: Create Release

.github/workflows/release.yml

@@ -54,6 +54,28 @@ jobs:
           tags: |
             langflowai/langflow:${{ steps.check-version.outputs.version }}
             langflowai/langflow:latest
+      - name: Wait for Docker Hub to propagate
+        run: sleep 120
+      - name: Build and push (backend)
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          file: ./docker/build_and_push_backend.Dockerfile
+          build-args: |
+            LANGFLOW_IMAGE=langflowai/langflow:${{ steps.check-version.outputs.version }}
+          tags: |
+            langflowai/langflow-backend:${{ steps.check-version.outputs.version }}
+            langflowai/langflow-backend:latest
+      - name: Build and push (frontend)
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          file: ./docker/frontend/build_and_push_frontend.Dockerfile
+          tags: |
+            langflowai/langflow-frontend:${{ steps.check-version.outputs.version }}
+            langflowai/langflow-frontend:latest
       - name: Create Release
         uses: ncipollo/release-action@v1
         with: