Run your Postgres Spring boot Application using Docker

#Run this Application using Docker

1. Create a Dockerfile for your project:

    # Use a base image with Java
    FROM openjdk:17-jdk-slim
   
    # Set the working directory inside the container
    WORKDIR /app
   
    # Copy the built jar file from the target directory to the container
    COPY target/your-spring-boot-app.jar app.jar
   
    # Expose the port that your application runs on
    EXPOSE 8080
   
    # Command to run the application
    ENTRYPOINT ["java", "-jar", "app.jar"]
   

2. Build a Jar-file using :

   mvn clean package

3. Create an docker-compose yaml file for database integration :

version: '3.8'

services:
  postgres:
    image: postgres:15
    container_name: psql-db
    restart: always
    environment:
      POSTGRES_DB=$POSTGRESDB_DATABASE
      POSTGRES_USER=$POSTGRESDB_USER
      POSTGRES_PASSWORD=$POSTGRESDB_PASSWORD
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data

4. To run the application and create containers use this command :

   docker-compose up

5. Check running application on http://localhost:8080/{mapped-name}

6. Now you can open pgAdmin/PSQL and perform some CRUD operations.

7. To stop the container : docker-compose down