User internal Docker network to connect Hydra to dev DB

.env.sample

@@ -1,3 +1,3 @@
 OSM_CONSUMER_KEY=<osm-consumer-key>
 OSM_CONSUMER_SECRET=<osm-consumer-secret>
-DSN=postgres://postgres@host.docker.internal:5433/osm-teams?sslmode=disable
+DSN=postgres://postgres@dev-db/osm-teams?sslmode=disable

README.md

@@ -32,7 +32,7 @@ Create an `.env` file by copying `.env.sample` and replacing the values as neede
     ```bash
     OSM_CONSUMER_KEY=<osm-teams-app>
     OSM_CONSUMER_SECRET=<osm-teams-app-secret>
-    DSN=postgres://postgres@host.docker.internal:5433/osm-teams?sslmode=disable
+    DSN=postgres://postgres@dev-db/osm-teams?sslmode=disable
     ```
 
 Start Hydra and PostgreSQL with Docker:

compose.dev.yml

@@ -19,8 +19,6 @@ services:
     depends_on:
       - hydra-migrate
     restart: always
-    networks:
-      - intranet
 
   hydra-migrate:
     image: oryd/hydra:v1.9.2
@@ -34,8 +32,6 @@ services:
     env_file:
       .env
     restart: on-failure
-    networks:
-      - intranet
 
   dev-db:
     platform: linux/amd64
@@ -48,9 +44,7 @@ services:
         - POSTGRES_DB=osm-teams
         - PGDATA=/opt/postgres/data
     volumes:
-        - ./docker-data/dev-db:/opt/postgres/data      
-    networks:
-      - intranet
+        - ./docker-data/dev-db:/opt/postgres/data
 
   test-db:
     platform: linux/amd64
@@ -64,8 +58,4 @@ services:
         - PGDATA=/opt/postgres/data
     volumes:
         - ./docker-data/test-db:/opt/postgres/data    
-    networks:
-      - intranet
 
-networks:
-  intranet: