Simple Maven Build Pipeline

To build a Mavenised project on Jenkins is quite simple;

In Jenkins, click the 'New Item' link in the left hand navigation
Enter the project name and at the bottom enter 'keycloak-client' in the Copy from text box.
Update project description
Change the Git Repository URL to match your repository.
In the Post Steps > Trigger/call builds on other projects, check to make sure that the Predefined parameters match the Maven groupId, artifactId and version (you can use environment variables here if you want to).
Save and run the build, this should create a docker container for your project.
Create a second job to run your new docker image using docker-compose. Go to 'New Item' from step 1 and copy 'keycloak-dev-deploy'
Update the description for the new job
Change the Build Trigger to listen to your first new job.
Change the STACK environment variable in the Execute Shell section to match the name of your stack.
Save and run the job and your containers should start on the dev platform.

Slack Notifications

Configuration

Go to 'Post-build Actions' and click 'Add post-build action'
Select 'Slack Notifications' from the pop-up list
Click on the 'Advanced' button to view all available options and settings.
Check "Notify Failure" and "Notify Repeated Failure"
Set the channel you want to notify, 'jenkins_azure' can be used for testing.
Open the channel in Slack then click 'Test Connection' in Jenkins. You should see a message in Slack along the lines of;
```
Slack/Jenkins plugin: you're all set on
https://build.tis.nhs.uk/jenkins/
```
Click 'Save' to persist the changes.

Notes

Note that you don't need to supply additional credentials, they are configured in the Jenkins settings for the server.
If you don't add the "Notify Repeated Failure" event then Jenkins will only alert on the first failure and will not send any notifications until the job has been fixed.

Modify Content Security Policy

Ref: https://content-security-policy.com/ and https://wiki.jenkins-ci.org/display/JENKINS/Configuring+Content+Security+Policy

Jenkins URL (Azure VM) : https://build.tis.nhs.uk /jenkins/script

System.setProperty(hudson.model.DirectoryBrowserSupport.class.getName() + ".CSP", "script-src 'unsafe-inline' 'self';")
System.setProperty("jenkins.model.DirectoryBrowserSupport.CSP", "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline';")

To persist the security changes the following command can be executed from the command line :

$ java -Dhudson.model.DirectoryBrowserSupport.CSP="sandbox allow-scripts; default-src 'self'; script-src * 'unsafe-eval'; img-src *; style-src * 'unsafe-inline'; font-src *" -jar jenkins.war

NOTE : The web browser refresh does not always reload the page with the new relaxed rules due to caching. To ensure this doesn't happen it's advised to restart your browser.

If this needs to be reset to default (more secure) the run the following command :

System.clearProperty("hudson.model.DirectoryBrowserSupport.CSP")