Use defaults in variables, to allow for local builds

tests/build.yml

@@ -3,54 +3,54 @@ version: '3'
 services:
 
   front:
-    image: $DOCKER_ORG/nginx:$VERSION
+    image: ${DOCKER_ORG:-mailu}/nginx:${VERSION:-local}
     build: ../core/nginx
 
   imap:
-    image: $DOCKER_ORG/dovecot:$VERSION
+    image: ${DOCKER_ORG:-mailu}/dovecot:${VERSION:-local}
     build: ../core/dovecot
 
   smtp:
-    image: $DOCKER_ORG/postfix:$VERSION
+    image: ${DOCKER_ORG:-mailu}/postfix:${VERSION:-local}
     build: ../core/postfix
 
   antispam:
-    image: $DOCKER_ORG/rspamd:$VERSION
+    image: ${DOCKER_ORG:-mailu}/rspamd:${VERSION:-local}
     build: ../services/rspamd
 
   antivirus:
-    image: $DOCKER_ORG/clamav:$VERSION
+    image: ${DOCKER_ORG:-mailu}/clamav:${VERSION:-local}
     build: ../optional/clamav
 
   webdav:
-    image: $DOCKER_ORG/radicale:$VERSION
+    image: ${DOCKER_ORG:-mailu}/radicale:${VERSION:-local}
     build: ../optional/radicale
 
   admin:
-    image: $DOCKER_ORG/admin:$VERSION
+    image: ${DOCKER_ORG:-mailu}/admin:${VERSION:-local}
     build: ../core/admin
 
   roundcube:
-    image: $DOCKER_ORG/roundcube:$VERSION
+    image: ${DOCKER_ORG:-mailu}/roundcube:${VERSION:-local}
     build: ../webmails/roundcube
 
   rainloop:
-    image: $DOCKER_ORG/rainloop:$VERSION
+    image: ${DOCKER_ORG:-mailu}/rainloop:${VERSION:-local}
     build: ../webmails/rainloop
 
   fetchmail:
-    image: $DOCKER_ORG/fetchmail:$VERSION
+    image: ${DOCKER_ORG:-mailu}/fetchmail:${VERSION:-local}
     build: ../services/fetchmail
 
   none:
-    image: $DOCKER_ORG/none:$VERSION
+    image: ${DOCKER_ORG:-mailu}/none:${VERSION:-local}
     build: ../core/none
 
   docs:
-    image: $DOCKER_ORG/docs:$VERSION
+    image: ${DOCKER_ORG:-mailu}/docs:${VERSION:-local}
     build: ../docs
 
   setup:
-    image: $DOCKER_ORG/setup:$VERSION
+    image: ${DOCKER_ORG:-mailu}/setup:${VERSION:-local}
     build: ../setup