adding goplantuml as ci job

.gitlab-ci.yml

@@ -22,4 +22,5 @@ include:
   - local: '/build/ci/.build-container.yml'
   - local: '/build/ci/.test.yml'
   - local: '/build/ci/.terraform-ci.yml'
-  - local: '/build/ci/.deploy-k8s.yml'
\ No newline at end of file
+  - local: '/build/ci/.deploy-k8s.yml'
+  - local: '/build/ci/.uml-autogen-ci.yml'

build/ci/.uml-autogen-ci.yml

+goplantuml:
+    image: golang:1.14-alpine
+    stage: .post
+    when: manual
+    variables:
+        FILENAME: "ClassDiagram.puml"
+
+    script:
+    # install git
+    - apk update && apk add git
+    # install goplantuml
+    - go get github.com/jfeliu007/goplantuml/cmd/goplantuml
+    # run goplantuml
+    - goplantuml "${CI_PROJECT_DIR}/nucleus" >> "$FILENAME"