fix: Update environment variables for Docker compatibility in .env.example and README

Author: gjovanovicst

.env.example

@@ -1,6 +1,6 @@
 # .env.example - Environment variable template for auth_api
 
-DB_HOST=localhost
+DB_HOST=postgres
 DB_PORT=5432
 DB_USER=postgres
 DB_PASSWORD=your_db_password
@@ -10,7 +10,8 @@ JWT_SECRET=your_jwt_secret
 ACCESS_TOKEN_EXPIRATION_MINUTES=15
 REFRESH_TOKEN_EXPIRATION_HOURS=720
 
-REDIS_ADDR=localhost:6379
+# Use 'redis:6379' for Docker Compose, 'localhost:6379' for local/manual run
+REDIS_ADDR=redis:6379
 REDIS_PASSWORD=your_redis_password
 REDIS_DB=0
 

Makefile

@@ -45,6 +45,9 @@ lint:
 build-prod:
 	CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o bin/api ./cmd/api
 
+docker-dev:
+	./dev.sh
+
 # Docker build
 docker-build:
 	docker build -t auth-api .

README.md

@@ -80,13 +80,20 @@ If you discover a vulnerability, please open an issue or contact the maintainer
 
 ## ⚙️ Environment Variables (example)
 ```
-DB_HOST=localhost
+# For Docker Compose:
+DB_HOST=postgres
 DB_PORT=5432
+REDIS_ADDR=redis:6379
+
+# For manual/local run:
+# DB_HOST=localhost
+# DB_PORT=5432
+# REDIS_ADDR=localhost:6379
+
 DB_USER=your_db_user
 DB_PASSWORD=your_db_password
-DB_NAME=your_db_name
+DB_NAME=auth_db
 JWT_SECRET=supersecretjwtkey
-REDIS_ADDR=localhost:6379
 EMAIL_HOST=smtp.example.com
 [email protected]
 GOOGLE_CLIENT_ID=your_google_client_id