More complex Heredoc support is missing

[mikko-timofeev]

( Related issue: #7 )

Actual behaviour

Linter fails to recognise multiline RUN statements with Heredoc involving output redirection.
Each line throws "Unknown instruction: {some_command} (dockerfile-utils 38)" (displayed with curly red underline).

Expected behaviour

The entire multiline RUN block should be recognised as a single, valid instruction.

Example:

This RUN command is valid and confirmed to be working as part of a production container image file.

RUN cat << 'EOF' > /home/example/.zshrc
setopt PROMPT_SUBST
autoload -U colors && colors
PS1='%n@%m %~ $ '
EOF

Exceptions displayed:
Unknown instruction: SETOPT (dockerfile-utils 38)
Unknown instruction: AUTOLOAD (dockerfile-utils 38)
Unknown instruction: PS1='%N@%M (dockerfile-utils 38)

---

Zed version: 0.210.4
Extension version: 0.0.6

[rcjsuen]

Thanks for the bug report. This is an issue upstream and I have opened rcjsuen/dockerfile-utils#130 to track this. You can remove the whitespace before the delimiter as a workaround.

[mikko-timofeev]

Indeed, removing the whitespace solves the issue! Thank you for a speedy response.

Feel free to close the issue whenever convenient.

And thanks to everyone contributing to this great extension!