Adding the Github action workflow for the server code (#24)

* Adding the Github action workflow for the server code

* Modifying the redis endpoint in application-test.properties to point to localhost because the Docker service exposes ports to the host

.github/workflows/server.yml

@@ -0,0 +1,81 @@
+# This workflow is responsible for building, testing & packaging the Java server codebase
+name: Appsmith Server Workflow 
+
+on:
+  push:
+    branches: [ release, master ]
+    # Only trigger if files have changed in this specific path
+    paths:
+      - 'app/server/**'
+  pull_request:
+    branches: [ release, master ]
+    paths:
+      - 'app/server/**'
+# Change the working directory for all the jobs in this workflow
+defaults:
+  run:
+    working-directory: app/server
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    # Service containers to run with this job. Required for running tests
+    services:
+      # Label used to access the service container
+      redis:
+        # Docker Hub image for Redis
+        image: redis
+        ports:
+          # Opens tcp port 6379 on the host and service container
+          - 6379:6379
+  
+    steps:
+    # Checkout the code
+    - uses: actions/checkout@v2
+    
+    # Setup Java
+    - name: Set up JDK 1.11
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.11
+
+    # Retrieve maven dependencies from cache. After a successful run, these dependencies are cached again
+    - name: Cache maven dependencies
+      uses: actions/cache@v2
+      env:
+        cache-name: cache-maven-dependencies
+      with:
+        # maven dependencies are stored in `~/.m2` on Linux/macOS
+        path: ~/.m2
+        key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+        restore-keys: ${{ runner.os }}-m2
+
+    # Build and test the code
+    - name: Build and test
+      env:
+        SPRING_PROFILES_ACTIVE: test
+      run: mvn -B package -Dspring.profiles.active=$SPRING_PROFILES_ACTIVE
+    
+    # Here, the GITHUB_REF is of type /refs/head/<branch_name>. We extract branch_name from this by removing the 
+    # first 11 characters. This can be used to build images for several branches
+    - name: Get the version to tag the Docker image
+      id: vars
+      run: echo ::set-output name=tag::$(echo ${GITHUB_REF:11})
+  
+    # Build release Docker image and push to Docker Hub
+    - name: Push release image to Docker Hub
+      if: success() && github.ref == 'refs/heads/release'
+      run: |
+        docker build -t appsmith/test-appsmith-repo:${{steps.vars.outputs.tag}} .
+        echo ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }} | docker login -u ${{ secrets.DOCKER_HUB_USERNAME }} --password-stdin
+        docker push appsmith/test-appsmith-repo
+    
+    # Build master Docker image and push to Docker Hub
+    - name: Push master image to Docker Hub with commit tag
+      if: success() && github.ref == 'refs/heads/master'
+      run: |
+        docker build -t appsmith/test-appsmith-repo:${GITHUB_SHA} .
+        docker build -t appsmith/test-appsmith-repo:latest .
+        echo ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }} | docker login -u ${{ secrets.DOCKER_HUB_USERNAME }} --password-stdin
+        docker push appsmith/test-appsmith-repo

app/server/appsmith-server/src/test/resources/application-test.properties

@@ -26,7 +26,7 @@ com.rollbar.access-token=random-value
 com.rollbar.environment=development
 
 # Redis Properties
-spring.redis.host=redis
+spring.redis.host=localhost
 spring.redis.port=6379
 
 # ACL config parameters