Docker 'no such file or directory' error often caused by Windows CRLF line endings

A common Docker error reports that an entrypoint script is missing even when the file is clearly present in the image. The message is misleading: the kernel is looking for an interpreter named with a trailing carriage return, which comes from CRLF line endings in a script checked out on Windows. The article recommends forcing LF endings through a .gitattributes rule, converting the editor setting, or stripping carriage returns with sed during the image build. Two related errors are also covered: 'permission denied' caused by a missing execute bit, fixable with COPY --chmod=755, and 'executable file not found' when a shell like bash is absent from a minimal Alpine image. Simple diagnostic commands are suggested to check line endings and file permissions inside the container.