feat: added workflow

Author: tobybatch

.github/workflows/build-and-push-to-dockerhub.yml

@@ -0,0 +1,34 @@
+name: Build and Push to Docker Hub
+
+on:
+  merge:
+    branches:
+      - '*'
+  push:
+    branches:
+      - '*'
+  pull_request:
+    types:
+      - 'opened'
+      - 'synchronize'
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Dump GitHub context
+      env:
+        GITHUB_CONTEXT: ${{ toJson(github) }}
+      run: echo "$GITHUB_CONTEXT"
+
+    - name: Login to Docker Hub
+      run: echo ${{ secrets.DOCKERHUB_TOKEN }} | docker login -u ${{ secrets.DOCKERHUB_USERNAME }} --password-stdin
+
+    - name: Build and push Docker image
+      run: |
+        docker build -t arcvouchers/service:$(echo ${GITHUB_REF#refs/heads/} | tr '/' '-') .
+        docker push arcvouchers/service:$(echo ${GITHUB_REF#refs/heads/} | tr '/' '-')