docs(build): added navigation for project

!10

mkdocs.yml

@@ -15,39 +15,13 @@ nav:
 
   - projects/index.md
 
-  - Gitlab CI: 
+  - Docker E-Mail Server: 
 
-    - Build:
+    - projects/docker-mail/index.md
 
-      - projects/gitlab-ci/mkdocs-build.md
+    - projects/docker-mail/dkim.md
 
-    - Linting:
+    - projects/docker-mail/spf.md
-
-      - projects/gitlab-ci/markdown_lint.md
-
-      - projects/gitlab-ci/yaml_lint.md
-
-    - Templates:
-      
-      - projects/gitlab-ci/templates/index.md
-    
-      - projects/gitlab-ci/templates/ansible_roles.md
-
-      - projects/gitlab-ci/templates/docker_container.md
-
-      - projects/gitlab-ci/templates/website.md
-
-    - Validation:
-
-      - projects/gitlab-ci/conventional_commits.md
-
-    - projects/gitlab-ci/index.md
-
-    - projects/gitlab-ci/git_mirror.md
-
-    - projects/gitlab-ci/gitlab_release.md
-
-    - projects/gitlab-ci/python.md
 
 - Operations: