Reducing example apps from static code (#315)

* feat(content): laod example-apps via content-loader functionality

- Move example-app definitions from `argocd/example-apps` and `applications/` into `examples/example-apps-via-content-loader`
- Adjust Dockerfile to initialize example-apps folder as standalone git repo for content-loader
- Update `GitopsPlaygroundCli` to include content examples via `--content.examples` flag
- Extend config merging logic (`MapUtils.deepMerge`) to support additional example content source
- Update schema, configurator, and tests to handle example-apps path and validation
- Clean up redundant templates and adjust paths accordingly

This refactor isolates example application definitions into a dedicated content-loader directory,
simplifying configuration handling and enabling dynamic content loading via the CLI.

* - helm-with-dependencies not existing anymore
- extract hardcoded references for example-apps in unit test

* add config.yaml referenced origin feature branch until it get merged back to main for test evaluation

* re-inserted unit test in its previous components reduced by the SetCredentials verification parts

* - Remove exercises
- Remove not used constants
- Add references for e.g., two registries operation inside the content-loader doc

* - Remove SCMM exercises and example app destroy handler entries

* Bugfix from merging main into this branch

* test

* add template scm variable to freemarker

* Bugfix null value of scm-provider

* Bugfix null value of scm-provider: move cloneContentRepos to enable method

* Remove double scm config in content loader template

* Bugfix repoUrl for SCM-Manager: remove hard coded URL

* Bugfix add missing baseUrl, host and protocol in template

* Bugfix jenkins: env SCM_URL to SCMM_URL

* Bugfix content loader : use repo based templating

* Bugfix false user-name in jenkins: scmm-user instead of scm-user

* Renaming scmm-user to scm-user  and SCMM_USER to SCM_USER

* Bugfix scm.repoUrl and gitops user crendentials for 3rd-party dependencies

* Rename jenkins environment variables and fix unit test

* Fix unit test

* Move helm-umbrella into apps

* Rename helm-umbrella folder to nginx-helm-umbrella folder

* Add README.md into misc folder

* Add name prefix for 3rd-party-dependencies

* Add name prefix for 3rd-party-dependencies in Jenkins files

* Add name prefix for jenkins global environment SCM_URL

* test:SCM_URL back to normal baseUrl

* Add new environment variable PREFIXED_SCM_URL for 3rd-party-dependencies in Jnekins

* Bugfix use tenant gitProvider in ContentLoader

* rename --gitlab-parent-id to --gitlab-group-id for consistency

* cleanup

* cleanup config.yaml

* rename ref back to feature/extract-example-apps config.yaml

---------

Co-authored-by: Philipp Markiewka <[email protected]>
Co-authored-by: Anna Vetcininova <[email protected]>

Author: 3 people

.dockerignore

@@ -3,6 +3,7 @@
 
 # Allowlist
 !applications/
+!examples/
 !exercises/
 !argocd/
 !docker-registry/

Dockerfile

@@ -163,7 +163,8 @@ ENV HOME=/home \
     GITOPS_BUILD_LIB_REPO=/gitops/repos/gitops-build-lib.git \
     CES_BUILD_LIB_REPO=/gitops/repos/ces-build-lib.git \
     JENKINS_PLUGIN_FOLDER=/gitops/jenkins-plugins/ \
-    LOCAL_HELM_CHART_FOLDER=/gitops/charts/
+    LOCAL_HELM_CHART_FOLDER=/gitops/charts/ \
+    EXAMPLE_APPS_CONTENT_REPO=/app/examples/example-apps-via-content-loader
 
 WORKDIR /app
 
@@ -177,10 +178,30 @@ RUN apk update --no-cache && apk upgrade --no-cache && \
      git \
     unzip
 
-USER 1000:0
-
 COPY --from=downloader /dist /
 
+# Set example apps config to use the repos from the image
+RUN sed -i \
+  -e "s|url: https://github.com/cloudogu/gitops-build-lib|url: 'file://$GITOPS_BUILD_LIB_REPO'|g" \
+  -e "s|url: https://github.com/cloudogu/ces-build-lib|url: 'file://$CES_BUILD_LIB_REPO'|g" \
+  -e "s|url: https://github.com/cloudogu/spring-boot-helm-chart|url: 'file://$SPRING_BOOT_HELM_CHART_REPO'|g" \
+  -e "s|url: https://github.com/cloudogu/spring-petclinic|url: 'file://$SPRING_PETCLINIC_REPO'|g" \
+  -e "s|url: https://github.com/cloudogu/gitops-playground|url: 'file://$EXAMPLE_APPS_CONTENT_REPO'|g" \
+  -e "/^[[:space:]]*path: examples\/example-apps-via-content-loader\//d" \
+  /app/examples/example-apps-via-content-loader/config.yaml
+
+# Initialize example apps folder with git, so we can use it with content-loader
+# we need safe.directory setting because of: fatal: detected dubious ownership in repository at '/app/examples/example-apps-via-content-loader'
+RUN git -C /app/examples/example-apps-via-content-loader init -b main && \
+    git -C /app/examples/example-apps-via-content-loader config user.email "[email protected]" && \
+    git -C /app/examples/example-apps-via-content-loader config user.name "Container" && \
+    git -C /app/examples/example-apps-via-content-loader add -A && \
+    git -C /app/examples/example-apps-via-content-loader commit -m "initial commit" && \
+    git config --global --add safe.directory /app/examples/example-apps-via-content-loader
+
+
+USER 1000:0
+
 ARG VCS_REF
 ARG BUILD_DATE
 LABEL org.opencontainers.image.title="gitops-playground" \

README.md

@@ -384,13 +384,13 @@ That is, if you pass a param via CLI, for example, it will overwrite the corresp
 
 ###### Gitlab(Tenant)
 
-| CLI               | Config             | Default   | Type   | Description                                                                                                |
-|-------------------|--------------------|-----------|--------|------------------------------------------------------------------------------------------------------------|
-| `--gitlab-url`    | `gitlabTenant.url` | `''`      | String | Base URL for the GitLab instance.                                                                          |
+| CLI                 | Config             | Default   | Type   | Description                                                                                                |
+|---------------------|--------------------|-----------|--------|------------------------------------------------------------------------------------------------------------|
+| `--gitlab-url`      | `gitlabTenant.url` | `''`      | String | Base URL for the GitLab instance.                                                                          |
 | `--gitlab-username` | `gitlabTenant.username` | `'oauth2.0'` | String | Defaults to: `oauth2.0` when a PAT token is provided.                                                      |
-| `--gitlab-token`  | `gitlabTenant.password` | `''`      | String | PAT token for the account.                                                                                 |
-| `--gitlab-parent-id` | `gitlabTenant.parentGroupId` | `''`  | String | The numeric ID for the GitLab Group where repositories and subgroups should be created.                    |
-|                   | `gitlabTenant.internal` | `false`  | Boolean | Indicates if GitLab is running in the same Kubernetes cluster. Currently only external URLs are supported. |
+| `--gitlab-token`    | `gitlabTenant.password` | `''`      | String | PAT token for the account.                                                                                 |
+| `--gitlab-group-id` | `gitlabTenant.parentGroupId` | `''`  | String | The numeric ID for the GitLab Group where repositories and subgroups should be created.                    |
+|                     | `gitlabTenant.internal` | `false`  | Boolean | Indicates if GitLab is running in the same Kubernetes cluster. Currently only external URLs are supported. |
 
 
 ###### Images