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[
"FROM"
"AS"
"RUN"
"CMD"
"LABEL"
"EXPOSE"
"ENV"
"ADD"
"COPY"
"ENTRYPOINT"
"VOLUME"
"USER"
"WORKDIR"
"ARG"
"ONBUILD"
"STOPSIGNAL"
"HEALTHCHECK"
"SHELL"
"MAINTAINER"
"CROSS_BUILD"
] @keyword
[
":"
"@"
] @operator
(comment) @comment @spell
(image_spec
(image_tag
":" @punctuation.special)
(image_digest
"@" @punctuation.special))
(double_quoted_string) @string
(expansion
[
"$"
"{"
"}"
] @punctuation.special
)
((variable) @constant
(#lua-match? @constant "^[A-Z][A-Z_0-9]*$"))
(arg_instruction
. (unquoted_string) @property)
(env_instruction
(env_pair . (unquoted_string) @property))
(expose_instruction
(expose_port) @number)
((stopsignal_instruction) @number
(#match? @number "[0-9][0-9]?$"))
((stopsignal_instruction) @constant.builtin
(#match? @constant.builtin "SIG(ABRT|HUP|INT|KILL|QUIT|STOP|TERM|TSTP)$"))
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