📎 Add DevEnv builder workflow

.github/workflows/build-docker-devenv.yml

@@ -0,0 +1,37 @@
+name: DevEnv Docker Image Builder
+
+on:
+  workflow_dispatch:
+  workflow_call:
+
+jobs:
+  build-and-push:
+    name: Build and push DevEnv Docker image
+    environment: release-admins
+    runs-on: ubuntu-24.04
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Registry
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.PUB_DOCKER_USERNAME }}
+          password: ${{ secrets.PUB_DOCKER_PASSWORD }}
+
+      - name: Build and push DevEnv Docker image
+        uses: docker/build-push-action@v6
+        env:
+          DOCKER_IMAGE: 'penpotapp/devenv'
+        with:
+          context: ./docker/devenv/
+          file: ./docker/devenv/Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ env.DOCKER_IMAGE }}:latest
+          cache-from: type=registry,ref=${{ env.DOCKER_IMAGE }}:buildcache
+          cache-to: type=registry,ref=${{ env.DOCKER_IMAGE }}:buildcache,mode=max