/usr/share/vim/addons/syntax/dockerfile.vim is in vim-syntax-docker 1.10.3-0ubuntu6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | " dockerfile.vim - Syntax highlighting for Dockerfiles
" Maintainer: Honza Pokorny <https://honza.ca>
" Version: 0.5
if exists("b:current_syntax")
finish
endif
let b:current_syntax = "dockerfile"
syntax case ignore
syntax match dockerfileKeyword /\v^\s*(ONBUILD\s+)?(ADD|CMD|ENTRYPOINT|ENV|EXPOSE|FROM|MAINTAINER|RUN|USER|LABEL|VOLUME|WORKDIR|COPY|STOPSIGNAL|ARG)\s/
highlight link dockerfileKeyword Keyword
syntax region dockerfileString start=/\v"/ skip=/\v\\./ end=/\v"/
highlight link dockerfileString String
syntax match dockerfileComment "\v^\s*#.*$"
highlight link dockerfileComment Comment
set commentstring=#\ %s
" match "RUN", "CMD", and "ENTRYPOINT" lines, and parse them as shell
let s:current_syntax = b:current_syntax
unlet b:current_syntax
syntax include @SH syntax/sh.vim
let b:current_syntax = s:current_syntax
syntax region shLine matchgroup=dockerfileKeyword start=/\v^\s*(RUN|CMD|ENTRYPOINT)\s/ end=/\v$/ contains=@SH
" since @SH will handle "\" as part of the same line automatically, this "just works" for line continuation too, but with the caveat that it will highlight "RUN echo '" followed by a newline as if it were a block because the "'" is shell line continuation... not sure how to fix that just yet (TODO)
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