Add docker support for running the server inside a container

Dockerfile

@@ -0,0 +1,16 @@
+FROM openjdk:8 AS builder
+ENV APP_HOME=/usr/app/
+WORKDIR $APP_HOME
+COPY build.gradle* settings.gradle* gradle* $APP_HOME
+COPY gradle $APP_HOME/gradle
+RUN ./gradlew build || return 0
+COPY . .
+RUN ./gradlew installDist
+
+FROM openjdk:8 AS runner
+ENV APP_HOME=/usr/app/
+ENV EXECUTABLE_NAME=bar-server
+WORKDIR $APP_HOME
+COPY --from=builder $APP_HOME/server/build/ .
+EXPOSE 50051
+CMD ./install/server/bin/$EXECUTABLE_NAME

README.md

@@ -68,6 +68,13 @@ The starter sources are organized into the following top-level folders:
   ./gradlew :server:BarServer
   ```
 
+  If you wish to start the server on a docker container (assuming you have docker installed on your machine)
+  ```sh
+  docker-compose up
+  ```
+
+  This will start the server and open up the 50051 port for connections
+
   In another console, run the client which will make requests to the server:
 
   ```sh

docker-compose.yml

@@ -0,0 +1,6 @@
+version: "3"
+services:
+  app:
+    build: .
+    ports:
+      - "50051:50051"

stub/build.gradle.kts

@@ -21,7 +21,7 @@ dependencies {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_1_7
+    sourceCompatibility = JavaVersion.VERSION_1_8
 }
 
 sourceSets {