Add Postgres db using docker-compose

.gitignore

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+.env

docker-compose.yml

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+version: "3"
+
+services:
+  goff-db:
+    image: postgres
+    ports:
+      - "5432:5432"
+    volumes:
+      - "${PWD}/postgres.conf:/etc/postgresql/postgresql.conf"
+      - "goff-db:/var/lib/postgresql/data:rw"
+    env_file: ${PWD}/.env
+
+  goff:
+    build:
+      context: .
+      dockerfile: "${PWD}/Dockerfile"
+    env_file: ${PWD}/.env
+    depends_on:
+      - goff-db
+    environment:
+      - DATABASE_URL=postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}
+    links:
+      - goff-db:goff.db
+
+volumes:
+  goff-db:
+    external: true