Install the Go agent using a container
The Go agent has two main components: contrast-go (a build tool) and the agent itself (a package injected into your app at build time by contrast-go).
You can download contrast-go with a curl command, or from a repository or package manager. You will also need to configure the agent to connect with Contrast. You can use a YAML configuration file or environment variables. You can download the YAML from Contrast, or create your own from a template.
When installing the Contrast Go agent in a container, you just need to follow these steps in your container image file.
Tip
If you would like to explore a sample application using the Go agent in a separate container, see the Go Test Bench open source project.
Before you begin
This topic provides general guidance for installing the Contrast Go agent in a containerized application, with Docker as an example.
You should have a basic understanding of how containers and related software work. You may need to adjust the instructions to meet your specific circumstances.
Build your application with contrast-go
Follow the instructions to install the Go agent.
Download the Go agent. Either use the curl below, or install with Debian.
RUN curl -L https://pkg.contrastsecurity.com/go-agent-release/latest/linux-amd64/contrast-go > contrast-go
Ensure the correct permissions are set
RUN chmod u+x contrast-go
Replace your normal
go buildcommand withcontrast-go build. This will give you an executable with Contrast embedded in it.RUN ./contrast-go build -o instrumented-app
Note
-o instrumented-appnames itinstrumented-appwhich is used in the below steps. You can change the name or omit the -o entirely and a default name is generated based on the package.
Run your instrumented application
Run your application.
CMD ./instrumented-app
