Project structure:
.
├── compose.yaml
├── README.md
└── sparkjava
├── Dockerfile
└── ...
services:
sparkjava:
build: sparkjava
ports:
- 8080:8080
The compose file defines an application with one service sparkjava.
When deploying the application, docker compose maps port 8080 of the sparkjava service container to port 8080 of the host as specified in the file.
Make sure port 8080 on the host is not already being in use.
$ docker compose up -d
Creating network "sparkjava_default" with the default driver
Building sparkjava
Step 1/11 : FROM maven:3.6.3-jdk-11 AS build
3.6.3-jdk-11: Pulling from library/maven
...
Successfully tagged sparkjava_sparkjava:latest
WARNING: Image for service sparkjava was built because it did not already exist. To rebuild this image you must use `docker-compose build` or `docker-compose up --build`.
Creating sparkjava_sparkjava_1 ... done
Listing containers must show one container running and the port mapping as below:
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5af94cb25394 sparkjava_sparkjava "/bin/sh -c 'java -j…" 20 seconds ago Up 19 seconds 0.0.0.0:8080->8080/tcp sparkjava_sparkjava_1
After the application starts, navigate to https://localhost:8080 in your web browser or run:
$ curl localhost:8080
Hello from Docker!
Stop and remove the containers
$ docker compose down
Stopping sparkjava_sparkjava_1 ... done
Removing sparkjava_sparkjava_1 ... done
Removing network sparkjava_default