# syntax=docker/dockerfile:1.6

FROM gitea/act_runner:0.2.13
USER root

# ---- Install system dependencies ----
RUN apk add --no-cache \
    docker-cli \
    docker-cli-buildx \
    git \
    bash \
    curl \
    ca-certificates \
    qemu-user-static \
    binfmt-support

# ---- Enable BuildKit by default ----
ENV DOCKER_BUILDKIT=1

# ---- Ensure buildx is available ----
RUN docker buildx version || true

# ---- Install binfmt handlers for multiarch ----
# This is required for arm64 builds on amd64
RUN docker run --rm --privileged tonistiigi/binfmt --install all || true

# ---- Create buildx builder ----
RUN docker buildx create --name multiarch --use || docker buildx use multiarch

# ---- Verify builder ----
RUN docker buildx inspect --bootstrap || true

USER runner