source: code/trunk/vendor/github.com/alecthomas/chroma/v2/lexers/docker.go@ 67

package lexers

import (
        . "github.com/alecthomas/chroma/v2" // nolint
)

// Docker lexer.
var Docker = Register(MustNewLexer(
        &Config{
                Name:            "Docker",
                Aliases:         []string{"docker", "dockerfile"},
                Filenames:       []string{"Dockerfile", "Dockerfile.*", "*.docker"},
                MimeTypes:       []string{"text/x-dockerfile-config"},
                CaseInsensitive: true,
        },
        dockerRules,
))

func dockerRules() Rules {
        return Rules{
                "root": {
                        {`#.*`, Comment, nil},
                        {`(ONBUILD)((?:\s*\\?\s*))`, ByGroups(Keyword, Using("Bash")), nil},
                        {`(HEALTHCHECK)(((?:\s*\\?\s*)--\w+=\w+(?:\s*\\?\s*))*)`, ByGroups(Keyword, Using("Bash")), nil},
                        {`(VOLUME|ENTRYPOINT|CMD|SHELL)((?:\s*\\?\s*))(\[.*?\])`, ByGroups(Keyword, Using("Bash"), Using("JSON")), nil},
                        {`(LABEL|ENV|ARG)((?:(?:\s*\\?\s*)\w+=\w+(?:\s*\\?\s*))*)`, ByGroups(Keyword, Using("Bash")), nil},
                        {`((?:FROM|MAINTAINER|EXPOSE|WORKDIR|USER|STOPSIGNAL)|VOLUME)\b(.*)`, ByGroups(Keyword, LiteralString), nil},
                        {`((?:RUN|CMD|ENTRYPOINT|ENV|ARG|LABEL|ADD|COPY))`, Keyword, nil},
                        {`(.*\\\n)*.+`, Using("Bash"), nil},
                },
        }
}