Document Portainer deployment

docker-compose.yml

@@ -2,17 +2,15 @@ services:
   database:
     image: postgres:16-alpine
     environment:
-      POSTGRES_DB: plasttrack
-      POSTGRES_USER: plasttrack
-      POSTGRES_PASSWORD: plasttrack
-    ports:
-      - "5432:5432"
+      POSTGRES_DB: ${POSTGRES_DB:-plasttrack}
+      POSTGRES_USER: ${POSTGRES_USER:-plasttrack}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-plasttrack}
     volumes:
       - postgres_data:/var/lib/postgresql/data
       - ./database/init.sql:/docker-entrypoint-initdb.d/01-init.sql:ro
       - ./database/seed.sql:/docker-entrypoint-initdb.d/02-seed.sql:ro
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U plasttrack -d plasttrack"]
+      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
       interval: 5s
       timeout: 3s
       retries: 20
@@ -34,11 +32,11 @@ services:
     build:
       context: ./backend
     environment:
-      DATABASE_URL: postgresql+psycopg://plasttrack:plasttrack@database:5432/plasttrack
+      DATABASE_URL: postgresql+psycopg://${POSTGRES_USER:-plasttrack}:${POSTGRES_PASSWORD:-plasttrack}@database:5432/${POSTGRES_DB:-plasttrack}
       MQTT_HOST: mqtt
       MQTT_PORT: 1883
       MQTT_TOPIC: plasttrack/machines/+/events
-      FRONTEND_ORIGIN: http://localhost:5173
+      FRONTEND_ORIGIN: ${FRONTEND_ORIGIN:-http://localhost:5173}
     depends_on:
       database:
         condition: service_healthy
@@ -63,8 +61,8 @@ services:
     build:
       context: ./frontend
     environment:
-      VITE_API_BASE_URL: http://localhost:8000
-      VITE_WS_URL: ws://localhost:8000/ws/dashboard
+      VITE_API_BASE_URL: ${VITE_API_BASE_URL:-http://localhost:8000}
+      VITE_WS_URL: ${VITE_WS_URL:-ws://localhost:8000/ws/dashboard}
     depends_on:
       - backend
     ports: