Error response from daemon: oci runtime error: exec: "/path/to/executable": permission denied

What This Error Means

The container entrypoint exists, but Docker cannot execute it because the file lacks execute permissions or the mount blocks execution.

Inspect the Dockerfile ENTRYPOINT/CMD and confirm the file exists in the final image.

Enter the image and check:docker run --rm -it <image> sh then ls -la <path>

Fix permissions in the image build (example:RUN chmod +x /path/to/file).

The binary/script is not present in the image at the expected path.

File permissions do not allow execution (chmod +x missing).

The command is correct but depends on a missing runtime/interpreter.

Rebuild the image and re-run the container.

Confirm the container process starts and stays running.

Error response from daemon: oci runtime error: exec: "/path/to/executable": permission denied

Add a simple smoke test in CI that runs the image and checks the entrypoint.

Prefer absolute paths and ensure scripts have correct line endings and shebang.