diff --git a/.gitignore b/.gitignore
index 7616f34..111dc0b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,4 @@ my-auth.edn
 
 .clj-kondo/
 .lsp/
+.eastwood
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6cc309a..434da7e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ stages:
   - upload
 
 .cljs-job: &cljs
-  image: domaindrivenarchitecture/shadow-cljs
+  image: "domaindrivenarchitecture/ddadevops-clojure:4.1.0"
   cache:
     key: ${CI_COMMIT_REF_SLUG}
     paths:
@@ -17,7 +17,7 @@ stages:
     - npm install
 
 .clj-job: &clj
-  image: domaindrivenarchitecture/lein
+  image: "domaindrivenarchitecture/ddadevops-clojure:4.1.0"
   cache:
     key: ${CI_COMMIT_REF_SLUG}
     paths:
@@ -26,33 +26,34 @@ stages:
     - mkdir -p /root/.lein
     - echo "{:auth {:repository-auth {#\"clojars\" {:username \"${CLOJARS_USER}\" :password \"${CLOJARS_TOKEN_DOMAINDRIVENARCHITECTURE}\" }}}}" > ~/.lein/profiles.clj
 
+.tag_only: &tag_only
+  rules:
+    - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'
+      when: never
+    - if: '$CI_COMMIT_TAG =~ /^[0-9]+\.[0-9]+\.[0-9]+$/'
+
 test-clj:
   <<: *clj
   stage: build_and_test
   script:
-    - lein test
+    - pyb test_clj
 
 test-cljs:
   <<: *cljs
   stage: build_and_test
   script:
-    - shadow-cljs compile test
-    - node target/node-tests.js
+    - pyb test_cljs
 
 upload-clj-release:
   <<: *clj
+  <<: *tag_only
   stage: upload
-  rules:
-    - if: '$CI_COMMIT_TAG != null'
   script:
-    - lein deploy
+    - pyb upload_clj
 
 upload-cljs-release:
   <<: *clj
+  <<: *tag_only
   stage: upload
-  rules:
-    - if: '$CI_COMMIT_TAG != null'
   script:
-    - mv project.clj project-clj.clj && mv project-cljs.clj project.clj
-    - lein deploy
-
+    - pyb upload_cljs
diff --git a/build.py b/build.py
new file mode 100644
index 0000000..7a02da8
--- /dev/null
+++ b/build.py
@@ -0,0 +1,122 @@
+from os import environ
+from subprocess import run
+from pybuilder.core import init, task
+from ddadevops import *
+
+default_task = "dev"
+
+name = "c4k-common"
+MODULE = "not-used"
+PROJECT_ROOT_PATH = "."
+
+
+@init
+def initialize(project):
+    input = {
+        "name": name,
+        "module": MODULE,
+        "stage": "notused",
+        "project_root_path": PROJECT_ROOT_PATH,
+        "build_types": [],
+        "mixin_types": ["RELEASE"],
+        "release_primary_build_file": "project.clj",
+        "release_secondary_build_files": [
+            "project-cljs.clj",
+        ],
+    }
+
+    build = ReleaseMixin(project, input)
+    build.initialize_build_dir()
+
+
+@task
+def test_clj(project):
+    run("lein test", shell=True, check=True)
+
+
+@task
+def test_cljs(project):
+    run("shadow-cljs compile test", shell=True, check=True)
+    run("node target/node-tests.js", shell=True, check=True)
+
+
+@task
+def upload_clj(project):
+    run("lein deploy", shell=True, check=True)
+
+
+@task
+def upload_cljs(project):
+    run(
+        "mv project.clj project-clj.clj && mv project-cljs.clj project.clj",
+        shell=True,
+        check=True,
+    )
+    run("lein deploy", shell=True, check=True)
+    run(
+        "mv project.clj project-cljs.clj && mv project-clj.clj project.clj",
+        shell=True,
+        check=True,
+    )
+
+
+@task
+def lint(project):
+    run(
+        "lein eastwood",
+        shell=True,
+        check=True,
+    )
+    run(
+        "lein ancient check",
+        shell=True,
+        check=True,
+    )
+
+
+@task
+def patch(project):
+    linttest(project, "PATCH")
+    release(project)
+
+
+@task
+def minor(project):
+    linttest(project, "MINOR")
+    release(project)
+
+
+@task
+def major(project):
+    linttest(project, "MAJOR")
+    release(project)
+
+
+@task
+def dev(project):
+    linttest(project, "NONE")
+
+
+@task
+def prepare(project):
+    build = get_devops_build(project)
+    build.prepare_release()
+
+
+@task
+def tag(project):
+    build = get_devops_build(project)
+    build.tag_bump_and_push_release()
+
+
+def release(project):
+    prepare(project)
+    tag(project)
+
+
+def linttest(project, release_type):
+    build = get_devops_build(project)
+    build.update_release_type(release_type)
+    test_clj(project)
+    test_cljs(project)
+    lint(project)