[FIXED] What is the path for application.properties (or similar file) in docker container?

Issue

I am dockerizing springboot application(with PostgreSQL). I want to overwrite application.properties in docker container with my own application.properties. My docker-compose.yml file looks like this:

version: '2'
services:
  API:
    image: 'api-docker.jar'
    ports:
      - "8080:8080"
    depends_on:
      - PostgreSQL
    environment:
      - SPRING_DATASOURCE_URL=jdbc:postgresql://PostgreSQL:5432/postgres
      - SPRING_DATASOURCE_USERNAME=postgres
      - SPRING_DATASOURCE_PASSWORD=password
      - SPRING_JPA_HIBERNATE_DDL_AUTO=update

  PostgreSQL:
    image: postgres
    volumes:
      - C:/path/to/my/application.properties:/path/of/application.properties/in/container
    ports:
      - "5432:5432"
    environment:
      - POSTGRES_PASSWORD=password
      - POSTGRES_USER=postgres
      - POSTGRES_DB=postgres

I am doing this to overwrite the application.properties in container with my application.properties file so that the data gets stored in localhost

I tried the path /opt/application.properties but it didn't work.

Solution

In case anybody comes across the same problem, here is the solution. I am trying to use my localhost database instead of in-memory database(storing it in container). This is my docker-compose.yml configuration

version: '2'
services:
  API:
    image: 'api-docker.jar' #(your jar file name)
    volumes:
      - path/to/new/application.properties:/config/env   
    ports:
      - "8080:8080"

You need to provide a new application.properties file which contains the configuration for storing the data into your local database(could be the copy of your actual application.properties). This file needs to be overwritten in the config file of the container and the path to that is /config/env (which is mentioned in the yml file)

Answered By - Renee
Answer Checked By - Gilberto Lyons (JavaFixing Admin)