How to Fix the 'no such file or directory' Error When Using Docker Scratch Images?

Troubleshooting "no such file or directory" Error with Docker Scratch Image

When building a Docker image with a scratch base image, one may encounter the error "standard_init_linux.go:207: exec user process caused "no such file or directory"". This issue can arise when certain dependencies or libraries are not available in the scratch image.

Possible Causes

The error typically indicates that the binary executable is missing or improperly named. Alternatively, it could mean that the binary is dynamically linked to a library that is not present in the scratch image.

Solution: Disable CGO

To resolve this issue, consider disabling CGO (C Go) during the Go build process. CGO is a feature that allows Go programs to interact with native C code, but it can result in dynamic links to the C standard library (libc).

By disabling CGO, you ensure that the binary is statically linked without any external dependencies. Use the following command to disable CGO:

RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
    -ldflags="-w -s" -o $PROJ_BIN_PATH ./cmd/...

Checking for Dynamic Links

After building the image, you can use the ldd command to check for dynamic links in the binary:

docker build --target=0 -t your_go_image .
docker run -it --rm your_go_image ldd /$PROJ_NAME

If the output of ldd indicates any dynamic links, you may need to investigate those dependencies and ensure they are included in the Docker image.

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