Store slug with each barrel

distillery/resources/compose/barrel/docker-compose.yml

@@ -13,6 +13,10 @@ services:
       LETSENCRYPT_HOST: ${LETSENCRYPT_HOST}
       LETSENCRYPT_EMAIL: ${LETSENCRYPT_EMAIL}
     
+    # label it with the current slug
+    labels:
+      eu.wiss-ki.barrel.slug: ${SLUG}
+    
     # the volumes to 
     volumes:
       - ${REAL_PATH}/.composer:/var/www/.composer

distillery/resources/templates/docker-env/barrel

@@ -1,5 +1,6 @@
 REAL_PATH=${REAL_PATH}
 
+SLUG=${SLUG}
 VIRTUAL_HOST=${VIRTUAL_HOST}
 
 LETSENCRYPT_HOST=${LETSENCRYPT_HOST}