Docker
docker run failed with exit code 127 because the command was not found
docker: Error response from daemon: Container command 'foo' not found or does not exist.
Exit code 127 means the container started, but the command Docker tried to run could not be found inside the image.
Observed message
docker: Error response from daemon: Container command 'foo' not found or does not exist.
Why it happens
- The specified command does not exist inside the container image.
- The command is not on PATH inside the container environment.
- The entrypoint or command override points to the wrong binary or script name.
How to fix it
- Verify that the intended executable exists in the image.
- Use an absolute path if the command is not on PATH.
- Review entrypoint and command overrides for typos or incorrect assumptions about the image contents.
