Dockerfile.1.5

# First stage: Build the builder program with modern Go
FROM golang:bullseye as builder
COPY builder/ /builder
WORKDIR /builder
RUN go build -o /builder/cloak

# Final stage: Setup environment with Go 1.18 only
FROM debian:bullseye

# Basic system utilities
RUN apt-get update && apt-get install -y \
    build-essential \
    git \
    curl \
    gpg \
    make \
    python3 \
    sed \
    tar \
    zip \
    unzip \
    mingw-w64 \
    binutils-mingw-w64 \
    g++-mingw-w64 \
    && rm -rf /var/lib/apt/lists/*

# Install Go 1.18 as the only Go version
RUN curl -L https://go.dev/dl/go1.18.10.linux-amd64.tar.gz | tar -C /usr/local -xzf -

# Add Go to PATH
ENV PATH="/usr/local/go/bin:/go/bin:${PATH}"
ENV GOPATH="/go"

# Set up protoc
RUN mkdir -p /usr/local/bin && \
    PROTOC_VERSION="25.2" && \
    PROTOC_ZIP="protoc-${PROTOC_VERSION}-linux-x86_64.zip" && \
    curl -OL "https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/${PROTOC_ZIP}" && \
    unzip -o ${PROTOC_ZIP} -d /usr/local bin/protoc && \
    rm -f ${PROTOC_ZIP}

# Install Go tools with Go 1.18
RUN mkdir -p /go/bin && \
    go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.31.0 && \
    go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.3.0

# Copy the builder from builder stage and make it executable
COPY --from=builder /builder/cloak /usr/local/bin/
RUN chmod +x /usr/local/bin/cloak

ENV TARGET_VERSION="1.5"

# Create work directory
RUN mkdir -p /tmp/output
WORKDIR /tmp/output

CMD ["bash"]