feat: Add Docker Compose configuration for PostgreSQL and update database credentials in main.go

backend/cmd/api/main.go

@@ -41,9 +41,9 @@ func main() {
 	dbConfig := models.DatabaseConfig{
 		Host:     "localhost",
 		Port:     5432,
-		User:     "postgres",
+		User:     "timetracker",
 		Password: "password",
-		DBName:   "mydatabase",
+		DBName:   "timetracker",
 		SSLMode:  "disable", // For development environment
 	}
 

docker-compose.yml

@@ -0,0 +1,16 @@
+services:
+  db:
+    image: postgres:14
+    container_name: timetracker_db
+    restart: always
+    ports:
+      - "5432:5432"
+    environment:
+      POSTGRES_USER: timetracker
+      POSTGRES_PASSWORD: password
+      POSTGRES_DB: timetracker
+    volumes:
+      - db_data:/var/lib/postgresql/data
+
+volumes:
+  db_data: