diff --git a/src/edu/internet2/jenkins/DockerBuild.groovy b/src/edu/internet2/jenkins/DockerBuild.groovy
index 34cddd5..9d5856b 100644
--- a/src/edu/internet2/jenkins/DockerBuild.groovy
+++ b/src/edu/internet2/jenkins/DockerBuild.groovy
@@ -3,11 +3,11 @@ package edu.internet2.jenkins;
 class DockerBuild implements Serializable {
   def script
   def env
-  def config
-  DockerBuild(script, env, config){ 
+  def properties
+  DockerBuild(script, env, properties){ 
     this.script = script
     this.env = env
-    this.config = config
+    this.properties = properties
   }
   
   def envDebug() {
@@ -38,8 +38,7 @@ class DockerBuild implements Serializable {
   }
   
   def readCommonBash(String key = 'maintainer') {
-    def matcher = config =~ (key + '="(.+)"')
-    matcher ? matcher[0][1] : null
+    properties.get(key)
   }
   
   def build(args){
diff --git a/vars/buildDocker.groovy b/vars/buildDocker.groovy
index e414c4f..3f3dd15 100644
--- a/vars/buildDocker.groovy
+++ b/vars/buildDocker.groovy
@@ -1,7 +1,14 @@
 import edu.internet2.jenkins.DockerBuild
 
 def call(env){
-  build = new DockerBuild(this, env, readFile('common.bash'))
+  
+  def content = readFile 'common.bash'
+
+  Properties properties = new Properties
+  InputStream is = new ByteArrayInputStream(content.getBytes());
+  properties.load(is)
+  
+  build = new DockerBuild(this, env, properties)
   echo build.maintainer()
   echo build.imagename()
   echo build.tag()