How to Fix \"pthread_create failed: Operation not permitted\" Error in Docker Image Build for Go Project in CircleCI?

What is the issue with building the Docker image for the Go project in CircleCI?

The issue lies in the "RUN go mod download" command, which is failing with the error "runtime/cgo: pthread_create failed: Operation not permitted." This error is related to the way Go handles CGO, which is a mechanism for calling C code from Go. The error suggests that the CGO environment is not set up correctly or that there's a permission issue.

How can you fix this issue?

One potential solution is to explicitly set the CGO_ENABLED environment variable in the CircleCI configuration. This variable tells the Go compiler to enable CGO, which will allow it to call C code. You can modify the "RUN go mod download" command in the CircleCI configuration file to:

RUN CGO_ENABLED=0 go mod download

This should resolve the issue with the "pthread_create failed" error. It's important to note that disabling CGO may have implications for your Go project, so be sure to test your application thoroughly after making this change.

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