🎉 init backend

Co-authored-by: Sindre Kjelsrud <kjelsrudsindre@gmail.com>

backend/docker-compose.yml

@@ -0,0 +1,13 @@
+version: "3.9"
+
+services:
+  postgres:
+    image: postgres:14-alpine
+    ports:
+      - 5432:5432
+    volumes:
+      - ~/apps/postgres:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_PASSWORD=helse123
+      - POSTGRES_USER=admin
+      - POSTGRES_DB=helseveileder