feat: added build to docker-compose, readme update for clarity

Author: robbierobs

README.md

@@ -1,10 +1,10 @@
-# Using multiple databases with the official PostgreSQL Docker image
-
 A PostgreSQL docker build that allows the creation of multiple databases in one container
 
 This build uses a script to create additional databases and grants all privileges to the databases to the admin user.
 
-## Usage
+This is built on top of the offical PostgreSQL image
+
+## docker-compose.yml
 
     postgres:
         restart: always

docker-compose.yml

@@ -7,6 +7,9 @@ services:
     postgres:
         restart: always
         image: irobbierobinson/multi-db-postgres:latest
+        build:
+          context: ./
+          dockerfile: Dockerfile
         volumes:
             - ./pg-db-data:/var/lib/postgresql/data
         environment:
@@ -15,7 +18,7 @@ services:
             - POSTGRES_DB=postgres
             - POSTGRES_ADDITIONAL_DATABASES=db,keycloak
         ports:
-            - 5432:5432
+            - 5434:5432
         networks:
             - backend
 networks: