Docker

The Docker image ships a statically-linked ts-pack binary on Alpine Linux. The build process compiles all parsers at image build time; the container needs no internet access or runtime downloads.

Quick start

docker pull ghcr.io/xberg-io/tree-sitter-language-pack:latest

# Parse a file by mounting the current directory
docker run --rm \
  -v "$(pwd):/work" -w /work \
  ghcr.io/xberg-io/tree-sitter-language-pack:latest \
  parse src/main.py

# From stdin
echo "def hello(): pass" | docker run --rm -i \
  ghcr.io/xberg-io/tree-sitter-language-pack:latest \
  parse - --language python

Image contents

The image is two layers:

1. A Rust/Alpine builder that compiles ts-pack-cli with all parsers statically linked via TSLP_LINK_MODE=static
2. A minimal alpine:latest runtime containing /usr/local/bin/ts-pack

The binary links statically against musl libc, so it runs on any Linux machine without extra dependencies.

Building locally

Before building, you need the parser C sources cloned locally:

uv run scripts/clone_vendors.py

Then build the image from the repository root (the full context must be present):

docker build -f docker/Dockerfile -t ts-pack .

The build takes several minutes — it compiles every grammar in sources/language_definitions.json from C.

Verify the image

docker run --rm ts-pack --version
docker run --rm ts-pack list | wc -l

Use in CI

# GitHub Actions
jobs:
  analyze:
    runs-on: ubuntu-latest
    container:
      image: ghcr.io/xberg-io/tree-sitter-language-pack:latest
    steps:
      - uses: actions/checkout@v4
      - name: Extract structure
        run: ts-pack process src/main.py --structure

Build a smaller image with a parser subset

To target a language subset, set TSLP_LANGUAGES at build time:

FROM rust:alpine AS builder
RUN apk add --no-cache musl-dev gcc g++ python3 bash
WORKDIR /build
COPY . .
RUN TSLP_LANGUAGES=python,javascript,typescript \
    TSLP_LINK_MODE=static \
    PROJECT_ROOT=/build \
    cargo build --release -p ts-pack-cli && \
    strip target/release/ts-pack

FROM alpine:latest
COPY --from=builder /build/target/release/ts-pack /usr/local/bin/ts-pack
ENTRYPOINT ["ts-pack"]

Run uv run scripts/clone_vendors.py --languages python,javascript,typescript first to fetch the needed grammar sources.

Multi-arch

The published image targets linux/amd64 and linux/arm64. The ci-docker.yaml and publish-docker.yaml workflows handle this via docker buildx.