ci: add workflow to build and push image (#37)

Signed-off-by: Mike Beaumont <[email protected]>

.github/workflows/build.yaml

@@ -0,0 +1,40 @@
+name: build
+
+on:
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Tag of image. Note that latest is used with the demo.yaml and kumactl!
+        required: true
+        type: string
+      push:
+        description: Whether to push the images
+        required: true
+        default: false
+        type: boolean
+permissions:
+  contents: read
+
+env:
+  DOCKER_REPO: kumahq/kuma-demo
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to Docker Hub
+        if: ${{ fromJSON(inputs.push) }}
+        uses: docker/login-action@v3
+        with:
+          username: ${{ vars.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_API_KEY }}
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          push: ${{ fromJSON(inputs.push) }}
+          platforms: linux/amd64, linux/arm64
+          tags: ${{ env.DOCKER_REPO }}:${{ inputs.tag }}

release/Dockerfile → Dockerfile

@@ -2,8 +2,8 @@ ARG ARCH=amd64
 FROM --platform=linux/${ARCH} node:alpine
 
 RUN apk add dumb-init
-COPY /app/package.json /app/package.json
 
+COPY /app/package.json /app/package.json
 RUN npm install --prefix /app
 
 COPY /app/public /app/public