/usr/share/vim/vim80/syntax/dockerfile.vim is in vim-runtime 2:8.0.1453-1ubuntu1.
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 | " dockerfile.vim - Syntax highlighting for Dockerfiles
" Maintainer: Honza Pokorny <https://honza.ca>
" Version: 0.6
" Last Change: 2016 Aug 9
" License: BSD
if exists("b:current_syntax")
finish
endif
let b:current_syntax = "dockerfile"
syntax case ignore
syntax match dockerfileKeyword /\v^\s*(ONBUILD\s+)?(ADD|ARG|CMD|COPY|ENTRYPOINT|ENV|EXPOSE|FROM|HEALTHCHECK|LABEL|MAINTAINER|RUN|SHELL|STOPSIGNAL|USER|VOLUME|WORKDIR)\s/
syntax region dockerfileString start=/\v"/ skip=/\v\\./ end=/\v"/
syntax match dockerfileComment "\v^\s*#.*$"
hi def link dockerfileString String
hi def link dockerfileKeyword Keyword
hi def link dockerfileComment Comment
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