diff --git a/lib/renderers.py b/lib/renderers.py
index c12d036..f3aff34 100644
--- a/lib/renderers.py
+++ b/lib/renderers.py
@@ -1,38 +1,24 @@
 from buildbot.plugins import util
 import re
 
-def _is_github(props):
-    if re.search(r'[/@]github.com', props.getProperty('repository')):
-        return True
-    return False
-
-@util.renderer
-def is_github(props):
-    return _is_github(props)
-
-@util.renderer
-def isnt_github(props):
-    return not _is_github(props)
-
-def _is_gitea(props):
-    if re.search(r'[/@]git.bitmessage.org', props.getProperty('repository'), re.I):
-        return True
-    return False
-
-@util.renderer
-def is_gitea(props):
-    return _is_gitea(props)
-
-@util.renderer
-def isnt_gitea(props):
-    return not _is_gitea(props)
 
 @util.renderer
 def is_build_script_available(props):
     # Actual check will got here
-    return props.getProperty('jobname', default='') != ''
+    return props.getProperty("jobname", default="") != ""
+
+
+@util.renderer
+def isnt_build_script_available(props):
+    return not is_build_script_available(props)
+
 
 @util.renderer
 def is_test_script_available(props):
     # Actual check will got here
-    return props.getProperty('jobname', default='') != ''
\ No newline at end of file
+    return props.getProperty("jobname", default="") != ""
+
+
+@util.renderer
+def isnt_test_script_available(props):
+    return not is_test_script_available(props)
diff --git a/multibuild.py b/multibuild.py
index 94bf1b2..d1a8f3c 100644
--- a/multibuild.py
+++ b/multibuild.py
@@ -16,6 +16,8 @@ import requests
 import re
 from buildbot.plugins import steps, util
 
+from .lib.renderers import *
+
 ty = "/change_hook/base"
 request_headers = {
     "Content-Type": "application/x-www-form-urlencoded",
@@ -33,11 +35,15 @@ RUN apt-get install -yq --no-install-suggests --no-install-recommends \
     buildbot-worker git subversion python3-dev libffi-dev python3-setuptools \
     python3-pip dumb-init curl openssh-client wget
 
+# buildbot entrypoint
+RUN wget -O /usr/local/bin/buildbot_entrypoint.sh https://git.bitmessage.org/Bitmessage/buildbot-scripts/raw/branch/master/docker/bionic/entrypoint.sh
+RUN chmod +x /usr/local/bin/buildbot_entrypoint.sh
+
 RUN echo 'buildbot ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
 
 USER buildbot
 
-ENTRYPOINT /entrypoint.sh "$BUILDMASTER" "$WORKERNAME" "$WORKERPASS"
+ENTRYPOINT /usr/local/bin/buildbot_entrypoint.sh "$BUILDMASTER" "$WORKERNAME" "$WORKERPASS"
 
 """
 
@@ -46,7 +52,7 @@ dockerfile_extra_contents_bionic = """
 # Buildbot
 RUN apt-get install -yq --no-install-suggests --no-install-recommends \
     buildbot-slave git subversion python3-dev libffi-dev python3-setuptools \
-    python3-pip dumb-init curl openssh-client
+    python3-pip dumb-init curl openssh-client wget
 
 # buildbot entrypoint
 RUN wget -O /usr/local/bin/buildbot_entrypoint.sh https://git.bitmessage.org/Bitmessage/buildbot-scripts/raw/branch/master/docker/bionic/entrypoint.sh
@@ -93,10 +99,12 @@ def get_dockerfile_contents(path, os_codename):
     with open(path, "r") as file:
         contents = file.read()
         # remove any line containing CMD or ENTRYFILE keywords
-        contents = re.sub(r"(?m)^CMD.*$", "", contents)
-        contents = re.sub(r"(?m)^ENTRYFILE.*$", "", contents)
+        re.sub(r"(?m)^(CMD|ENTRYFILE).*$", "", contents)
 
-    return contents + eval("dockerfile_extra_contents_" + os_codename)
+    return contents + {
+        "focal": dockerfile_extra_contents_focal,
+        "bionic": dockerfile_extra_contents_bionic,
+    }[os_codename]
 
 
 def trigger_child_hooks(buildbotUrl: str, os_codename: str, directory=".buildbot"):
@@ -115,11 +123,13 @@ def trigger_child_hooks(buildbotUrl: str, os_codename: str, directory=".buildbot
             test_script_exists = True
 
         # make a post request
-        request_data["dockerfile"] = get_dockerfile_contents(
-            join(directory, job, "Dockerfile"), os_codename
-        )
-        request_data["build_script_available"] = str(build_script_exists)
-        request_data["test_script_available"] = str(test_script_exists)
+        request_data["properties"] = {
+            "dockerfile": get_dockerfile_contents(
+                join(directory, job, "Dockerfile"), os_codename
+            ),
+            "build_script_available": is_build_script_available(build_script_exists),
+            "test_script_available": is_test_script_available(test_script_exists),
+        }
         requests.post(request_url, headers=request_headers, data=request_data)
 
 
@@ -158,7 +168,9 @@ def add_child_build_sh_step(build_factory, job, directory=".buildbot"):
     build_factory.addStep(
         steps.ShellCommand(
             name="build_" + job,
-            command=["bash", "-c", "cd " + join(directory, job) + " && ./build.sh"],
+            command=["bash", "-c", join(directory, job, "build.sh")],
+            doStepIf=is_build_script_available,
+            hideStepIf=isnt_build_script_available,
         )
     )
 
@@ -170,7 +182,9 @@ def add_child_test_sh_step(build_factory, job, directory=".buildbot"):
     build_factory.addStep(
         steps.ShellCommand(
             name="test_" + job,
-            command=["bash", "-c", "cd " + join(directory, job) + " && ./test.sh"],
+            command=["bash", "-c", join(directory, job, "test.sh")],
+            doStepIf=is_test_script_available,
+            hideStepIf=isnt_test_script_available,
         )
     )