Different builders for different branches

Author: iFargle

Jenkinsfile

@@ -6,7 +6,7 @@ pipeline {
         APP_VERSION    = 'v0.5.6'
         HS_VERSION     = "v0.20.0" // Version of Headscale this is compatible with
         BUILD_DATE     = ''
-        BUILDER_NAME   = "multiarch"
+        BUILDER_NAME   = "multiarch-${env.BRANCH_NAME}"
 
         DOCKERHUB_CRED = credentials('dockerhub-ifargle-pat')