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TeamCity Minimal Build Agent

This is an official JetBrains TeamCity minimal build agent image.

<img src="https://raw.githubusercontent.com/JetBrains/teamcity-docker-images/master/docs/media/GitHub.png" height="20" align="center"/> More details about tags and components are here.

The TeamCity build agent connects to the TeamCity server and spawns the actual build processes. You can use the jetbrains/teamcity-server image to run a TeamCity server. To learn how you can start the TeamCity server together with agents in one go, see these Docker Compose samples.

This minimal image adds just a TeamCity agent without any tools like VCS clients, etc. It is suitable for simple builds and can serve as a base for your custom images. For Java or .NET development we recommend using the default build agent image jetbrains/teamcity-agent.

How to Use This Image

Pull the TeamCity minimal image from the Docker Hub Repository:

jetbrains/teamcity-minimal-agent

  and use the following command to start a container with TeamCity agent running inside a Linux container:

docker run -e SERVER_URL="<url to TeamCity server>"  \ 
    -v <path to agent config folder>:/data/teamcity_agent/conf  \      
    jetbrains/teamcity-minimal-agent

  or a Windows container:

docker run -e SERVER_URL="<url to TeamCity server>" 
    -v <path to agent config folder>:C:/BuildAgent/conf      
    jetbrains/teamcity-minimal-agent

where <url to TeamCity server> is the full URL for TeamCity server, accessible by the agent. Note that localhost will not generally not work as it will refer to the localhost inside the container. <path to agent config folder> is the host machine directory to serve as the TeamCity agent config directory. We recommend providing this binding in order to persist the agent configuration, e.g. authorization on the server. Note that you should map a different folder for every new agent you create.

Since version 2020.1, TeamCity agent Docker images run under a non-root user. Refer to our upgrade notes for information on possible affected use cases.

When you run the agent for the first time, you should authorize it via the TeamCity server UI: go to the Unauthorized Agents page in your browser. See more details.

All information about agent authorization is stored in agent's configuration folder. If you stop the container with the agent and then start a new one with the same config folder, the agent's name and authorization state will be preserved.

TeamCity agent does not need manual upgrade: it will upgrade itself automatically on connecting to an upgraded server.

Agent Image Environment Variables

• SERVER_URL - URL of the TeamCity server agent will connect to
• AGENT_NAME - (optional) Name of the agent in TeamCity UI, autogenerated if omitted
• AGENT_TOKEN - (optional) Agent authorization token, if unset, the agent should be authorized via TeamCity UI.
• OWN_ADDRESS - (optional, linux only) IP address build agent binds to, autodetected
• OWN_PORT - (optional, linux only) Port build agent binds to, 9090 by default

Windows Containers Limitations

The details on the known problems in Windows containers are available in the TeamCity documentation.

Customization

You can customize the image via the usual Docker procedure:

1. Run the image

docker run -e SERVER_URL="<url to TeamCity server>"  \ 
    -v <path to agent config folder>:/data/teamcity_agent/conf  \
    --name="my-customized-agent"  \
    jetbrains/teamcity-minimal-agent  \

1. Enter the container

docker exec -it my-customized-agent bash

1. Change whatever you need
2. Exit and create a new image from the container

docker commit my-customized-agent <the registry where you what to store the image>

License

The image is available under the TeamCity license. TeamCity is free for perpetual use with the limitation of 100 build configurations (jobs) and 3 agents. Licensing details.

Feedback

Report issues of suggestions to the official TeamCity issue tracker.

Other TeamCity Images

• TeamCity Server
• Build Agent