ast-grep-lang-dockerfile

ast-grep language support for Dockerfile, using tree-sitter-containerfile.

Installation

npm install ast-grep-lang-dockerfile
# or
bun add ast-grep-lang-dockerfile

Usage with CLI

Add to your sgconfig.yml:

customLanguages:
  dockerfile:
    libraryPath: node_modules/ast-grep-lang-dockerfile/parser.so
    extensions: [Dockerfile, .dockerfile]
    languageSymbol: tree_sitter_containerfile
    expandoChar: $

Then use ast-grep as usual:

sg run -l dockerfile -p 'FROM $IMG' .

Usage with NAPI

import dockerfile from 'ast-grep-lang-dockerfile'
import { registerDynamicLanguage, parse } from '@ast-grep/napi'

registerDynamicLanguage({ dockerfile })

const sg = parse('dockerfile', `FROM node:18
RUN npm install
CMD ["node", "app.js"]`)

console.log(sg.root().kind()) // source_file

Building from source

If no prebuild is available for your platform, the package will attempt to build the parser from source during installation. This requires tree-sitter-cli:

npm install tree-sitter-cli --save-dev