add workflow file for building Dockerfile.sandbox and pushing to Dockerhub

Author: marwan37

.github/workflows/build-push-sandbox.yml

@@ -0,0 +1,120 @@
+name: Build and Push Project Sandbox Images
+
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - "_assets/**"
+      - ".github/**"
+      - ".gitignore"
+      - ".gitmodules"
+      - ".typos.toml"
+      - "CODE-OF-CONDUCT.md"
+      - "CONTRIBUTING.md"
+      - "generate_sandbox_dockerfile.py"
+      - "generate_zenml_project.py"
+      - "LICENSE"
+      - "pyproject.toml"
+      - "README.md"
+
+  workflow_dispatch:
+    inputs:
+      project:
+        description: "Project to build (leave empty to detect from changed files)"
+        required: false
+        default: ""
+
+jobs:
+  detect-changes:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.set-matrix.outputs.matrix }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 2
+
+      - name: Detect changed projects
+        id: set-matrix
+        run: |
+          if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
+            if [ -n "${{ github.event.inputs.project }}" ]; then
+              # Use the manually specified project
+              PROJECTS="[\"${{ github.event.inputs.project }}\"]"
+            else
+              # Auto-detect changed files (same logic as push events)
+              CHANGED_FILES=$(git diff --name-only HEAD^ HEAD)
+              CHANGED_DIRS=$(echo "$CHANGED_FILES" | grep -o "^[^/]*" | sort -u | grep -v "^$")
+              PROJECTS_WITH_DOCKERFILE=$(find . -maxdepth 2 -name "Dockerfile.sandbox" -not -path "*/\.*" | xargs dirname | xargs basename -a)
+              PROJECTS="["
+              COMMA=""
+              for DIR in $CHANGED_DIRS; do
+                if echo "$PROJECTS_WITH_DOCKERFILE" | grep -q "^$DIR$"; then
+                  PROJECTS="${PROJECTS}${COMMA}\"${DIR}\""
+                  COMMA=","
+                fi
+              done
+              PROJECTS="${PROJECTS}]"
+            fi
+          else
+          # Original push event logic
+          CHANGED_FILES=$(git diff --name-only HEAD^ HEAD)
+          CHANGED_DIRS=$(echo "$CHANGED_FILES" | grep -o "^[^/]*" | sort -u | grep -v "^$")
+          PROJECTS_WITH_DOCKERFILE=$(find . -maxdepth 2 -name "Dockerfile.sandbox" -not -path "*/\.*" | xargs dirname | xargs basename -a)
+          PROJECTS="["
+          COMMA=""
+          for DIR in $CHANGED_DIRS; do
+            if echo "$PROJECTS_WITH_DOCKERFILE" | grep -q "^$DIR$"; then
+              PROJECTS="${PROJECTS}${COMMA}\"${DIR}\""
+              COMMA=","
+            fi
+          done
+          PROJECTS="${PROJECTS}]"
+          fi
+          echo "matrix=$PROJECTS" >> $GITHUB_OUTPUT
+          echo "Projects to build: $PROJECTS"
+
+  build-and-push:
+    needs: detect-changes
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        project: ${{ fromJson(needs.detect-changes.outputs.matrix) }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Check for Dockerfile.sandbox
+        id: check-dockerfile
+        run: |
+          if [ -f "${{ matrix.project }}/Dockerfile.sandbox" ]; then
+            echo "dockerfile_exists=true" >> $GITHUB_OUTPUT
+          else
+            echo "dockerfile_exists=false" >> $GITHUB_OUTPUT
+            echo "No Dockerfile.sandbox found in ${{ matrix.project }}, skipping."
+          fi
+
+      - name: Set up Docker Buildx
+        if: steps.check-dockerfile.outputs.dockerfile_exists == 'true'
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to DockerHub
+        if: steps.check-dockerfile.outputs.dockerfile_exists == 'true'
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD}}
+
+      - name: Build and push
+        if: steps.check-dockerfile.outputs.dockerfile_exists == 'true'
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: ${{ matrix.project }}/Dockerfile.sandbox
+          push: true
+          tags: |
+            safoinext/zenml-sandbox-${{ matrix.project }}:latest
+          cache-from: type=gha
+          cache-to: type=gha,mode=max