added ci.yml

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - '**' #every branch
+  pull_request:
+    branches:
+      - '**' #every branch
+
+jobs:
+  setup:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Available platforms
+        run: echo ${{ steps.buildx.outputs.platforms }}
+  build:
+    runs-on: ubuntu-latest
+    needs: setup
+    steps:
+      - uses: actions/checkout@master
+        with:
+          ref: ${{ github.ref }}
+      - name: Build
+        env:
+          VERSION: ${{ github.run_number }}
+        run: |
+          echo "Start CI build"
+          docker buildx build --platform linux/amd64,linux/arm64,linux/arm/v7 -t bbernhard/signal-cli-rest-api:${VERSION}-ci .
+