diff --git a/multibuild.py b/multibuild.py
index 9355421..900f183 100644
--- a/multibuild.py
+++ b/multibuild.py
@@ -10,8 +10,8 @@ Requires docker
 # TODO: write hook job, maybe also a dockerfile?
 # TODO: what to do about non-docker jobs
 
-from os import walk
-from os.path import exists, isfile, join, listdir
+from os import listdir, walk
+from os.path import exists, isfile, join
 import requests
 import re
 from buildbot.plugins import steps, util
@@ -66,6 +66,7 @@ ENTRYPOINT /usr/local/bin/buildbot_entrypoint.sh "$BUILDMASTER" "$WORKERNAME" "$
 
 """
 
+path =".buildbot"
 
 def list_jobs(directory=".buildbot"):
     """
@@ -92,11 +93,11 @@ def find_artifacts(directory="out"):
         return join(directory, _)
 
 
-def get_dockerfile_contents(path, os_codename):
+def get_dockerfile_contents(props):
     """
     Read contents of a Dockerfile and add extra contents for the given os_codename
     """
-    with open(path, "r") as file:
+    with open(join(path + props.getProperty('jobname', default=None)), "r") as file:
         contents = file.read()
         # remove any line containing CMD or ENTRYFILE keywords
         re.sub(r"(?m)^(CMD|ENTRYFILE).*$", "", contents)
@@ -104,7 +105,7 @@ def get_dockerfile_contents(path, os_codename):
     return contents + {
         "focal": dockerfile_extra_contents_focal,
         "bionic": dockerfile_extra_contents_bionic,
-    }[os_codename]
+    }[util.Interpolate("%(prop:os_codename)s")]
 
 
 def trigger_child_hooks(buildbotUrl: str, os_codename: str, repository, branch, jobname, directory=".buildbot"):
@@ -164,28 +165,28 @@ def add_parent_step(build_factory, jobname, repository, branch):
     )
 
 
-def add_child_build_sh_step(build_factory, job, directory=".buildbot"):
+def add_child_build_sh_step(build_factory, directory=".buildbot"):
     """
     Add a step to the build factory
     """
     build_factory.addStep(
         steps.ShellCommand(
-            name="build_" + job,
-            command=["bash", "-c", join(directory, job, "build.sh")],
+            name="build_" + util.Interpolate("%(prop:jobname)s"),
+            command=["bash", "-c", join(directory, util.Interpolate("%(prop:jobname)s"), "build.sh")],
             doStepIf=is_build_script_available,
             hideStepIf=isnt_build_script_available,
         )
     )
 
 
-def add_child_test_sh_step(build_factory, job, directory=".buildbot"):
+def add_child_test_sh_step(build_factory, directory=".buildbot"):
     """
     Add a step to the build factory
     """
     build_factory.addStep(
         steps.ShellCommand(
-            name="test_" + job,
-            command=["bash", "-c", join(directory, job, "test.sh")],
+            name="test_" + util.Interpolate("%(prop:jobname)s"),
+            command=["bash", "-c", join(directory, util.Interpolate("%(prop:jobname)s"), "test.sh")],
             doStepIf=is_test_script_available,
             hideStepIf=isnt_test_script_available,
         )