Change docker compose env vars

Previously, each container would be handed all the env vars int the .env file.
This is bad practice for a variety of reasons.
This commit changes it so the docker compose file specified the env file for each container.
the benefits:
- less env vars to be set by the end user
- containers are only given vars relevant to them
- when running docker compose up, only containers affected by changed vars are restarted

.env.example

@@ -1,11 +1,9 @@
 # 🌐 Frontend
-PUBLIC_SERVER_URL=http://server:8000 # PLEASE DON'T CHANGE :) - Should be the service name of the backend with port 8000, even if you change the port in the backend service. Only change if you are using a custom more complex setup.
-ORIGIN=http://localhost:8015
+FRONTEND_URL=http://localhost:8014 # URL that is allowed to be used for accessing the frontend
 BODY_SIZE_LIMIT=Infinity
-FRONTEND_PORT=8015
+FRONTEND_PORT=8014 # port used in the internal network (outside docker)
 
 # 🐘 PostgreSQL Database
-PGHOST=db
 POSTGRES_DB=database
 POSTGRES_USER=adventure
 POSTGRES_PASSWORD=changeme123
@@ -15,11 +13,8 @@ SECRET_KEY=changeme123
 DJANGO_ADMIN_USERNAME=admin
 DJANGO_ADMIN_PASSWORD=admin
 DJANGO_ADMIN_EMAIL=admin@example.com
-PUBLIC_URL=http://localhost:8016 # Match the outward port, used for the creation of image urls
-CSRF_TRUSTED_ORIGINS=http://localhost:8016,http://localhost:8015
-DEBUG=False
-FRONTEND_URL=http://localhost:8015 # Used for email generation. This should be the url of the frontend
-BACKEND_PORT=8016
+BACKEND_URL=http://localhost:8017 # URL that is allowed to be used for accessing the backend, used for the creation of image urls
+BACKEND_PORT=8017 # port exposed to the internal network (outside docker)
 
 # Optional: use Google Maps integration
 # https://adventurelog.app/docs/configuration/google_maps_integration.html
@@ -44,4 +39,4 @@ DISABLE_REGISTRATION=False
 # Optional: Use Umami for analytics
 # https://adventurelog.app/docs/configuration/analytics.html
 # PUBLIC_UMAMI_SRC=https://cloud.umami.is/script.js # If you are using the hosted version of Umami
-# PUBLIC_UMAMI_WEBSITE_ID=
+# PUBLIC_UMAMI_WEBSITE_ID=

docker-compose.yml

@@ -4,7 +4,11 @@ services:
     image: ghcr.io/seanmorley15/adventurelog-frontend:latest
     container_name: adventurelog-frontend
     restart: unless-stopped
-    env_file: .env
+    environment:
+      - PUBLIC_SERVER_URL=http://server:8000 # PLEASE DON'T CHANGE :) - Should be the service name of the backend with port 8000, even if you change the port in the backend service. Only change if you are using a custom more complex setup.
+      - ORIGIN=${FRONTENT_URL:-http://localhost:8015}
+      - BODY_SIZE_LIMIT=${BODY_SIZE_LIMIT:-Infinity}
+      #- FRONTEND_PORT=${FRONTEND_PORT=:-8015}
     ports:
       - "${FRONTEND_PORT:-8015}:3000"
     depends_on:
@@ -14,16 +18,34 @@ services:
     image: postgis/postgis:16-3.5
     container_name: adventurelog-db
     restart: unless-stopped
-    env_file: .env
+    environment:
+      - POSTGRES_DB=${POSTGRES_DB:-database}
+      - POSTGRES_USER=${POSTGRES_USER:-adventure}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-changeme123}
     volumes:
       - postgres_data:/var/lib/postgresql/data/
 
   server:
     #build: ./backend/
-    image: ghcr.io/seanmorley15/adventurelog-backend:latest
+    #image: ghcr.io/seanmorley15/adventurelog-backend:latest
+    image: 9f0471e8d7f872adf81dc41c9296f99fbadac01edb26e
     container_name: adventurelog-backend
     restart: unless-stopped
-    env_file: .env
+    environment:
+      - PGHOST=db
+      - POSTGRES_DB=${POSTGRES_DB:-database}
+      - POSTGRES_USER=${POSTGRES_USER:-adventure}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-changeme123}
+      - SECRET_KEY=${SECRET_KEY:-changeme123}
+      - DJANGO_ADMIN_USERNAME=${DJANGO_ADMIN_USERNAME:-admin}
+      - DJANGO_ADMIN_PASSWORD=${DJANGO_ADMIN_PASSWORD:-admin}
+      - DJANGO_ADMIN_EMAIL=${DJANGO_ADMIN_EMAIL:-admin@example.com}
+      - PUBLIC_URL=${BACKEND_URL:-http://localhost:8016}
+      - CSRF_TRUSTED_ORIGINS=${FRONTEND_URL:-http://localhost:8015},${BACKEND_URL:-http://localhost:8016}
+      - DEBUG=False
+      - FRONTEND_URL=${FRONTEND_URL:-http://localhost:8015} # Used for email generation. This should be the url of the frontend
+      - BACKEND_PORT=${BACKEND_PORT:-8016}
+
     ports:
       - "${BACKEND_PORT:-8016}:80"
     depends_on: