update readme and docker-compose.yml

docker-compose.yml

@@ -5,25 +5,23 @@ services:
     build:
       context: .
     container_name: lokal
-    environment:
-      DATABASE_URL: "ecto://postgres:postgres@lokal-db/lokal"
-      # generate a random base64 string 64 characters long, preferably not from a website
-      SECRET_KEY_BASE: "change-me-to-something-random-this-is-really-important-change-it"
-    ports:
-      # do not expose this publically!
-      # always host from behind a reverse proxy, with a properly configured certificate
-      - "4000:4000"
     restart: always
+    environment:
+      - DATABASE_URL="ecto://postgres:postgres@lokal-db/lokal"
+      # generate a random base64 string 64 characters long, preferably not from a website
+      - SECRET_KEY_BASE="change-me-to-something-random-this-is-really-important-change-it"
+    expose:
+      - "4000"
     depends_on:
       - lokal-db
 
   lokal-db:
     image: postgres:13
     container_name: lokal-db
-    environment:
-      POSTGRES_USER: postgres
-      POSTGRES_PASSWORD: postgres
-      POSTGRES_DB: lokal
     restart: always
+    environment:
+      - POSTGRES_USER="postgres"
+      - POSTGRES_PASSWORD="postgres"
+      - POSTGRES_DB="lokal"
     volumes:
-      - ./data:/var/lib/postgresql/data
+      - ./data:/var/lib/postgresql/data