Added second docker-compose to root folder

Also created a build and run script - I ran out of time to set up a proper prod-like compose environment.
Now we need maven installed and the main method selected in the pom.xml

Author: Ferenc Hammerl

.devcontainer/Dockerfile

@@ -3,15 +3,15 @@ ARG VARIANT="14"
 FROM mcr.microsoft.com/vscode/devcontainers/java:0-${VARIANT}
 
 # [Optional] Install Maven or Gradle
-ARG INSTALL_MAVEN="false"
+ARG INSTALL_MAVEN="true"
 ARG MAVEN_VERSION=3.6.3
 ARG INSTALL_GRADLE="false"
 ARG GRADLE_VERSION=5.4.1
 RUN if [ "${INSTALL_MAVEN}" = "true" ]; then su vscode -c "source /usr/local/sdkman/bin/sdkman-init.sh && sdk install maven \"${MAVEN_VERSION}\""; fi \
     && if [ "${INSTALL_GRADLE}" = "true" ]; then su vscode -c "source /usr/local/sdkman/bin/sdkman-init.sh && sdk install gradle \"${GRADLE_VERSION}\""; fi
 
 # [Optional] Install a version of Node.js using nvm for front end dev
-ARG INSTALL_NODE="true"
+ARG INSTALL_NODE="false"
 ARG NODE_VERSION="lts/*"
 RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "source /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
 

buildAndRun.sh

@@ -0,0 +1,8 @@
+sleep 0.2 # So we log under db_1 :)
+echo "Hacky build-script is starting up. We're reusing the devcontainer (as opposed to getting a proper JRE image)"
+echo "This is going to take long the first time, Maven needs to install lots of dependencies"
+cd workspace 
+/usr/local/sdkman/candidates/maven/current/bin/mvn -T 4 package -DskipTests -nsu -ntp
+cd target
+echo "Running spring application"
+java -jar polls-0.0.1-SNAPSHOT.jar

docker-compose.yml

@@ -0,0 +1,28 @@
+version: '3.8'
+
+services:
+  app:    
+    build: 
+      context: .
+      dockerfile: .devcontainer/Dockerfile
+    volumes:
+      # This is where VS Code should expect to find your project's source code and the value of "workspaceFolder" in .devcontainer/devcontainer.json
+      - .:/workspace:cached
+    # Overrides default command so things don't shut down after the process ends.
+    command: /bin/sh -c "/workspace/buildAndRun.sh"
+    network_mode: service:db
+  db:
+    image: "postgres"
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: pwd1234
+      POSTGRES_DB: doodle
+    ports:
+      - 5432:5432
+      - 8080:8080 # for app
+    volumes:
+      - pg_db:/var/lib/postgresql/data
+      - ./dbconfig/:/docker-entrypoint-initdb.d/
+
+volumes:
+  pg_db:

pom.xml

@@ -16,7 +16,9 @@
 
 	<properties>
 		<java.version>14</java.version>
+		<start-class>com.fhammerl.polls.PollsApplication</start-class>
 	</properties>
+	
 
 	<dependencies>
 		<dependency>