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How to exclude Testcontainers Cloud usage on a per-project basis?

If you want to exclude specific projects from using Testcontainers Cloud:

When started Testcontainers Cloud configures the local environment to use it for Testcontainers tests by default. Sometimes you might want to opt-out from using it in a specific project, for example because it uses older Testcontainers libraries not yet compatible with Testcontainers Cloud or code patterns that are not ideal for a cloud-based container execution. 

You can configure a particular project not to use the global Testcontainers Cloud configuration by updating the dockerconfig.source property in the testcontainers.properties configuration file within the project. 

This option is available for some Testcontainers libraries, for example, testcontainers-java  since version 1.16.1. 

Add the testcontainers.properties configuration file to the classpath of your project with the following content:


You can keep the Testcontainers Cloud client app running and no more changes are needed, but this project will now use the usual automatic Testcontainers environment discovery mechanism to find a suitable way to communicate with Docker.