chore: for redis, use service name as the default (#9109)

chore: use service name as default redis hostname

docker/example.env

@@ -16,5 +16,3 @@ DB_PASSWORD=postgres
 DB_HOSTNAME=immich_postgres
 DB_USERNAME=postgres
 DB_DATABASE_NAME=immich
-
-REDIS_HOSTNAME=immich_redis

docs/docs/install/environment-variables.md

@@ -80,9 +80,9 @@ When `DB_URL` is defined, the `DB_HOSTNAME`, `DB_PORT`, `DB_USERNAME`, `DB_PASSW
 ## Redis
 
 | Variable         | Description    | Default | Services              |
-| :--------------- | :------------- | :------------: | :-------------------- |
+| :--------------- | :------------- | :-----: | :-------------------- |
 | `REDIS_URL`      | Redis URL      |         | server, microservices |
-| `REDIS_HOSTNAME` | Redis Host     | `immich_redis` | server, microservices |
+| `REDIS_HOSTNAME` | Redis Host     | `redis` | server, microservices |
 | `REDIS_PORT`     | Redis Port     | `6379`  | server, microservices |
 | `REDIS_DBINDEX`  | Redis DB Index |   `0`   | server, microservices |
 | `REDIS_USERNAME` | Redis Username |         | server, microservices |

e2e/docker-compose.yml

@@ -12,7 +12,6 @@ x-server-build: &server-common
     - DB_USERNAME=postgres
     - DB_PASSWORD=postgres
     - DB_DATABASE_NAME=immich
-    - REDIS_HOSTNAME=redis
     - IMMICH_MACHINE_LEARNING_ENABLED=false
     - IMMICH_METRICS=true
   volumes:

server/src/config.ts

@@ -52,7 +52,7 @@ function parseRedisConfig(): RedisOptions {
     }
   }
   return {
-    host: process.env.REDIS_HOSTNAME || 'immich_redis',
+    host: process.env.REDIS_HOSTNAME || 'redis',
     port: Number.parseInt(process.env.REDIS_PORT || '6379'),
     db: Number.parseInt(process.env.REDIS_DBINDEX || '0'),
     username: process.env.REDIS_USERNAME || undefined,