VIVO-1961: GitHub Action to Publish Docker Image (#220)

* simple dockerfile and image publish workflow
* upgrade to v2 of build push action
* provide context and explicit docker file

Resolves: https://jira.lyrasis.org/browse/VIVO-1961

.github/workflows/deploy.yml

@@ -7,7 +7,7 @@ on:
   workflow_dispatch:
 
 jobs:
-  build:
+  deploy:
     runs-on: ubuntu-latest
 
     env:

.github/workflows/docker.yml

@@ -0,0 +1,59 @@
+name: Docker
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+
+    env:
+      MAVEN_OPTS: -Xmx1024M
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Clone Vitro
+        run: git clone https://github.com/vivo-project/Vitro.git ../Vitro
+
+      - name: Maven Cache
+        uses: actions/cache@v2
+        with:
+          path: ~/.m2/repository
+          key: ${{ runner.os }}-cache-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-cache-m2-
+
+      - name: Setup Java
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+
+      - name: Maven Build
+        run: mvn clean install
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: vivoweb/vivo:latest
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}

Dockerfile

@@ -0,0 +1,12 @@
+FROM tomcat:9-jdk11-openjdk
+
+ENV JAVA_OPTS="${JAVA_OPTS} -Dvivo-dir=/opt/vivo/home/"
+
+RUN mkdir /opt/vivo
+RUN mkdir /opt/vivo/home
+
+COPY ./installer/webapp/target/vivo.war /usr/local/tomcat/webapps/ROOT.war
+
+EXPOSE 8080
+
+CMD ["catalina.sh", "run"]