adds welcome_theme env

.env.sample

@@ -6,6 +6,7 @@ DOMAIN=keycloak.example.com
 LETS_ENCRYPT_ENV=production
 
 ADMIN_USERNAME=admin
+WELCOME_THEME=keycloak
 
 SECRET_DB_ROOT_PASSWORD_VERSION=v1
 SECRET_DB_PASSWORD_VERSION=v1

compose.yml

@@ -18,6 +18,7 @@ services:
       - DB_VENDOR=mariadb
       - KEYCLOAK_PASSWORD_FILE=/run/secrets/admin_password
       - KEYCLOAK_USER=${ADMIN_USERNAME}
+      - KEYCLOAK_WELCOME_THEME=${WELCOME_THEME}
       - PROXY_ADDRESS_FORWARDING=true
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080"]