Hide Postgres credentials

.gitignore

@@ -1,3 +1,4 @@
+.env
 # Yarn stuff
 .yarn
 # TypeScript stuff

docker-compose.yml

@@ -14,6 +14,6 @@ services:
     volumes:
       - /var/lib/docker/volumes/daggerbot-db:/var/lib/postgresql/data:rw
     environment:
-      POSTGRES_USER: daggerbot
-      POSTGRES_PASSWORD: dagbot
-      POSTGRES_DB: daggerbot
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_DB}