diff --git a/src/main/python/ddadevops/hetzner_mixin.py b/src/main/python/ddadevops/hetzner_mixin.py
new file mode 100644
index 0000000..8993820
--- /dev/null
+++ b/src/main/python/ddadevops/hetzner_mixin.py
@@ -0,0 +1,13 @@
+from .credential import gopass_credential_from_env_path
+
+class HetznerMixin:
+
+    def __init__(self, project, project_root_path, build_commons_path, module, stage):
+            super().__init__(self, project, project_root_path, build_commons_path, module, stage)
+            self.hetzner_api_key = gopass_credential_from_env_path('HETZNER_API_KEY_PATH')
+
+    def project_vars(self):
+        ret = super().project_vars
+        if self.hetzner_api_key:
+            ret['hetzner_api_key'] = self.hetzner_api_key
+        return ret
\ No newline at end of file
diff --git a/src/main/python/ddadevops/meissa_build.py b/src/main/python/ddadevops/meissa_build.py
deleted file mode 100644
index ed36745..0000000
--- a/src/main/python/ddadevops/meissa_build.py
+++ /dev/null
@@ -1,49 +0,0 @@
-import os
-from .credential import gopass_credential_from_env_path
-from .build import init_project
-from subprocess import run
-
-STAGE = 'stage'
-HTTP_NET_API_KEY = 'http_net_api_key'
-HETZNER_API_KEY = 'hetzner_api_key'
-PROJECT_ROOT_PATH = 'project_root_path'
-BUILD_COMMONS_PATH = 'build_commons_path'
-
-def meissa_init_project(project, project_root_path, build_commons_path, module):
-    project = init_project(project, project_root_path, build_commons_path, module)
-    project.set_property(HTTP_NET_API_KEY, \
-        gopass_credential_from_env_path('HTTP_NET_API_KEY_PATH'))
-    project.set_property(HETZNER_API_KEY, \
-        gopass_credential_from_env_path('HETZNER_API_KEY_PATH'))
-    return project
-    
-def hetzner_api_key(project):
-   return project.get_property(HETZNER_API_KEY)
-
-def stage(project):
-    return project.get_property(STAGE)
-
-def module(project):
-    return project.get_property('name')
-
-def project_root_path(project):
-    return project.get_property(PROJECT_ROOT_PATH)
-
-def build_commons_path(project):
-    return project.get_property(BUILD_COMMONS_PATH)
-
-def build_target_path(project):
-    return project_root_path(project) + 'target/' + project.name + '/'
-
-def tf_import_name(project):
-    return project.get_property('tf_import_name')
-
-def tf_import_resource(project):
-    return project.get_property('tf_import_resource')
-
-def initialize_target(project):
-    run('rm -rf ' + build_target_path(project), shell=True)
-    run('mkdir -p ' + build_target_path(project), shell=True)
-    run('cp *.tf ' + build_target_path(project), shell=True)
-    run('cp *.tfars ' + build_target_path(project), shell=True)
-    run('cp *.edn ' + build_target_path(project), shell=True)