Add remaining code for diagram cleanup

.github/workflows/build.yaml

@@ -0,0 +1,26 @@
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+name: Build
+jobs:
+  build:
+    strategy:
+      matrix:
+        go-version: [1.13.x]
+        platform: [ubuntu-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v1
+      - name: Set env
+        run: echo ::set-env name=RELEASE_VERSION::${GITHUB_REF:10}
+      - name: Build
+        run: docker build
+          -t tomwright/mermaid-server:latest \
+          -t tomwright/mermaid-server:${{ env.RELEASE_VERSION }} \
+          -f Dockerfile .
+      - name: Login
+        run: echo ${{ secrets.DOCKER_PASS }} | docker login -u${{ secrets.DOCKER_USER }} --password-stdin
+      - name: Push
+        run: docker push tomwright/mermaid-server:latest && docker push tomwright/mermaid-server:${{ env.RELEASE_VERSION }}

.github/workflows/test.yaml

@@ -0,0 +1,24 @@
+on: [push, pull_request]
+name: Test
+jobs:
+  test:
+    strategy:
+      matrix:
+        go-version: [1.13.x]
+        platform: [ubuntu-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: Checkout code
+        uses: actions/checkout@v1
+      - uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+      - name: Test
+        run: go test -race ./...