Create Docker Image of your Spring Boot app.

Run your Spring Boot application in Docker container and connect to Postgres in Docker.

• This project demonstrates starting a Spring Boot app in a docker container.
• It uses Docker compose to run the Spring Boot app connected to Postgres DB with all of these running in their own separate containers.

Updated Simple Steps to run the project

Step 0: Make sure docker is installed and running.
Step 1: Set the environment variable for Postgres DB password like this
export POSTGRES_DB_PWD=admin
Step 2: Run docker compose up:
docker compose -f ./docker-compose.yaml up

• Note: The updated DockerFile has multi-stage build that produces the jar file to be used by docker compose

(Deprecated) Steps to run the project

Step 0: Make sure docker is installed and running.
Step 1: Build the project to create the .jar file (./mvnw clean package -DskipTests) (If needed, chmod +x mvnw)
Step 2: Set the environment variable for Postgres DB password like this
export POSTGRES_DB_PWD=admin
Step 3: Run docker compose up:
docker compose -f ./docker-compose.yaml up
Step 4: Use tool like Postman to send request to the end-point for creating product record and viewing product record:
http://localhost:8081/product-service/addProduct
http://localhost:8081/product-service/getAllProducts
http://localhost:8081/product-service/getProduct/1

Some important commands

• Get inside a Docker container's terminal docker exec -it <container_name or id> /bin/bash
• psql -U postgres: To start psql for Postgres once inside the container.
• CLI commands for Postgres: \l to see the databases, \c to connect to a specific database, \dt to see the tables
• Up docker containers/services
  docker compose up -d (use without -d if you need to see the logs)
  docker compose -f ./docker-compose.yaml up
• Down the docker containers/services
  docker compose down
• Build docker image of your Spring boot app using Dockerfile
  docker build -t docker-springboot:1 .
• Run your newly created image in docker
  docker run -p 8081:8081 docker-springboot:1