Dockerfile.obfs4

# Build the obfs4 binary (cross-compiling)
FROM --platform=$BUILDPLATFORM golang:1.20-alpine as obfs-builder
ARG OBFS_VERSION="obfs4proxy-0.0.14-tor2"

RUN apk add --update --no-cache git && \
      git clone https://gitlab.torproject.org/tpo/anti-censorship/pluggable-transports/lyrebird.git --depth 1 --branch "${OBFS_VERSION}" /obfs

# Build obfs
RUN mkdir /out
WORKDIR /obfs
ARG TARGETOS TARGETARCH
RUN --mount=type=cache,target=/root/.cache/go-build \
    --mount=type=cache,target=/go/pkg \
    CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /out/obfs4proxy ./obfs4proxy && \
      echo 'user:x:1001:1001:user:/:' > /tmp/passwd

FROM scratch
USER 1001
COPY --from=obfs-builder /tmp/passwd /etc/passwd
COPY --from=obfs-builder /out/obfs4proxy /
ENTRYPOINT ["/obfs4proxy"]