initial github-actions test

.github/workflows/push.yml

@@ -0,0 +1,44 @@
+# implement caching from latest(so no building redundant steps)
+# use local cache on tests(so no pulling)
+name: docker-compose-actions-workflow
+on: push
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set ENV variables
+        run: |
+          echo "BRANCH_NAME=$(echo ${GITHUB_REF#refs/heads/} | tr / -)" >> $GITHUB_ENV
+          cat .env >> $GITHUB_ENV
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          driver-opts: |
+            network=host
+          cache-from: type=registry,ref=${{ secrets.HUB_USERNAME }}/paper_trail:${{ env.BRANCH_NAME }}
+          cache-to: type=inline
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.HUB_USERNAME }}
+          password: ${{ secrets.HUB_KEY }}
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ secrets.HUB_USERNAME }}/paper_trail:${{ env.BRANCH_NAME }}
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: docker up
+        run: |
+          sed -i $(echo "s/\$DOCKER_TAG/paper_trail:$BRANCH_NAME/g") .env
+          docker-compose run paper_trail mix test test/paper_trail
+      - name: docker ps
+        run: |
+          docker ps
+        env:
+          DOCKER_TAG: paper_trail:${{ env.BRANCH_NAME }}