fix(docker-compose): Update Redis command and healthcheck to use actual password variable

docker-compose.yml

@@ -31,11 +31,11 @@ services:
     restart: always
     environment:
       - REDIS_PASSWORD=${AUTHELIA_REDIS_PASSWORD}
-    command: ["redis-server", "--requirepass", "$$REDIS_PASSWORD"] # Use $$ to escape $ for compose
+    command: ["redis-server", "--requirepass", "${AUTHELIA_REDIS_PASSWORD}"] # Use actual password variable
     volumes:
       - ${CONFIG_ROOT:-.}/redis:/data:Z
     healthcheck:
-      test: ["CMD", "redis-cli", "-a", "$$REDIS_PASSWORD", "ping"] # Use $$ to escape $ for compose
+      test: ["CMD", "redis-cli", "-a", "${AUTHELIA_REDIS_PASSWORD}", "ping"] # Use actual password variable
       interval: 5s
       timeout: 3s
       retries: 5