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Lightweight Spring Boot Docker image based on Alpine + Docker Compose file\n\n[![](https://images.microbadger.com/badges/image/flopes/spring-boot-docker.svg)](https://microbadger.com/images/flopes/spring-boot-docker \"Get your own image badge on microbadger.com\")\n[![](https://images.microbadger.com/badges/version/flopes/spring-boot-docker:1.2.svg)](https://microbadger.com/images/flopes/spring-boot-docker:1.2 \"Get your own version badge on microbadger.com\")\n[![](https://img.shields.io/docker/pulls/flopes/spring-boot-docker.svg)](https://img.shields.io/docker/pulls/flopes/spring-boot-docker.svg)\n[![](https://img.shields.io/docker/stars/flopes/spring-boot-docker.svg)](https://img.shields.io/docker/stars/flopes/spring-boot-docker.svg)\n[![Build Status](https://travis-ci.org/f-lopes/spring-boot-docker.svg?branch=master)](https://travis-ci.org/f-lopes/spring-boot-docker)\n\n## Features:\n- Uses lightweight openjdk:8-jre-alpine image\n- Wrapper script that enables application to take PID 1 \u0026 receive SIGTERM signals ([see here](#pid-1))\n- Starts Spring Boot as `spring-boot` user inside the container\n- Custom JAVA_OPTS\n- Health check (Docker tag `1.0-healthcheck` https://github.com/f-lopes/spring-boot-docker/tree/healthcheck)\n- Debug mode\n\n## Available environment variables\n\nName                    | Default   | Description\n------------------------|-----------|------------------------------------\nJAVA_OPTS               |       | JAVA_OPTS\nDEBUG                   | false | Enable or disable debug mode\nDEBUG_PORT              | 8000  | Debug port\n\n\n## How to use ?\n\n1. Simply extend your image from `flopes/spring-boot-docker` and set your application name as an environment variable:\n    ``` Docker\n    FROM flopes/spring-boot-docker:1.1\n    ```\n\n2. Copy your Spring Boot executable jar into an `assets` folder, rename it to `spring-boot.jar` and build you image:\n```docker build -t spring-boot-image . ```\n\n3. Start your application:\n    - Using Docker CLI ```docker run -d -p 8080:8080 spring-boot-image```\n\n    - Using the provided ```docker-compose.yml``` in the `sample` directory:\n```docker-compose up -d```\n\n### Inject environment variables:\n```docker run -d -p 8080:8080 -e JAVA_OPTS=\"-Xms256m -Xmx512m\" spring-boot-image```\n\n## Using Docker Compose\n\nThe `docker-compose.yml` file picks its configuration from the `.env` one.\n\nUsing this file, you can set the desired properties:\n```\n# Application properties\nSERVER_PORT=8080\nDEBUG_PORT=8000\nSPRING_PROFILES_ACTIVE=dev\nDEBUG=false\n# -Dprop=... -Dparameter=...\nJAVA_OPTS=\n\n# Host properties\nHOST_SERVER_PORT=8080\nHOST_DEBUG_PORT=8000\n```\n\n## Debug mode\nTo run the application in debug mode, simply set the `DEBUG` variable to true in the `.env` file.\n\nLaunch the application:\n`docker-compose up -d`\n\nBy default, the debug port used is the `8000`.\n\n## Spring profile(s)\nBy default, the application will run with `dev` Spring profile\n\nTo run the application with a specific Spring profile, set the desired one in the `.env` file:\n```\nSPRING_PROFILES_ACTIVE=dev\n```\n\n## PID 1\n```bash\n$ docker run -d --name spring-boot -p 8080:8080 spring-boot-extends\na5b3036136dffa34af0cdeff6153e87f9a20ba1cdc54c36fe9113b385bfb3264\n\nlopes_f@lopes-f-laptop MINGW64 /d/WORK/git/docker-poc/docker (develop)\n$ docker exec -it a5b3036136dffa34af0cdeff6153e87f9a20ba1cdc54c36fe9113b385bfb3264 sh\n/app $ ps -ef\nPID   USER     TIME   COMMAND\n    1 spring-b   0:10 java -Djava.security.egd=file:/dev/./urandom -jar /app/spring-boot.jar\n   23 spring-b   0:00 sh\n   27 spring-b   0:00 ps -ef\n/app $\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ff-lopes%2Fspring-boot-docker","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ff-lopes%2Fspring-boot-docker","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ff-lopes%2Fspring-boot-docker/lists"}