add usage of environment variables

backend/main.go

@@ -19,7 +19,7 @@ func connectToPostgreSQL() (*gorm.DB, error) {
 	password := os.Getenv("POSTGRES_PASSWORD")
 	dbname := os.Getenv("POSTGRES_DB")
 	host := os.Getenv("POSTGRES_HOST")
-	port := os.Getenv("DB_PORT")
+	port := os.Getenv("POSTGRES_PORT")
 
 	dsn := fmt.Sprintf(
 		"user=%s password=%s dbname=%s host=%s port=%s sslmode=disable",
@@ -72,6 +72,6 @@ func main() {
 		c.JSON(200, gin.H{"message": "Hello World"})
 	})
 
-	port := os.Getenv("PORT")
+	port := os.Getenv("BACKEND_PORT")
 	r.Run(fmt.Sprintf(":%s", port))
 }

docker-compose.yml

@@ -32,14 +32,14 @@ services:
     build:
       context: ./backend
       dockerfile: Dockerfile
-    container_name: backend
+    container_name: "${BACKEND_HOST}"
     restart: unless-stopped
-    # ports:
-    #   - "${BACKEND_PORT}:8080"
     depends_on:
       - db
     networks:
       - app-network
+    env_file: 
+      - ./.env
 
   db:
     image: postgres:16
@@ -49,7 +49,5 @@ services:
       POSTGRES_USER: "${POSTGRES_USER}"
       POSTGRES_PASSWORD: "${POSTGRES_PASSWORD}"
       POSTGRES_DB: "${POSTGRES_DB}"
-    # ports:
-    #   - "${DB_PORT}:5432"
     networks:
       - app-network

nginx/nginx.conf

@@ -6,11 +6,20 @@ http {
     server_tokens off;
     charset utf-8;
 
-	server {
-        listen 80 default_server;
-	    server_name _;
-	    return 301 https://$host$request_uri;
-	}
+    server {
+        listen 80;
+        server_name adam-french.co.uk www.adam-french.co.uk;
+
+        # Allow Certbot to access the ACME challenge
+        location /.well-known/acme-challenge/ {
+            root /var/www/certbot;
+        }
+
+        # Redirect everything else to HTTPS
+        location / {
+            return 301 https://$host$request_uri;
+        }
+    }
 
 
 	server {
@@ -29,7 +38,7 @@ http {
         }
 
         location /posts/ {
-            proxy_pass http://localhost:8080/posts;
+            proxy_pass http://backend:8080/posts;
             proxy_set_header Host $host;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;