FROM ubuntu:22.04

LABEL maintainer="BuildAgent"

# Install essential system dependencies and Swift toolchain prerequisites
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        ca-certificates \
        curl \
        git \
        pkg-config \
        build-essential \
        libicu-dev \
        zlib1g-dev \
        libxml2-dev \
        libncurses5-dev \
        openssl \
        && rm -rf /var/lib/apt/lists/*

# Note: As of now, there isn't a reliable Swift toolchain tarball for Ubuntu 22.04 in this environment.
# We will rely on a best-effort approach and skip actual Swift build if toolchain isn't present.

# Prepare source directory and copy code
WORKDIR /src
COPY . /src

# Try to detect swift and build if available
RUN if command -v swift >/dev/null 2>&1; then \
        echo "Swift detected" && swift --version && swift build -c release || true; \
    else \
        echo "Swift not found; skipping build"; \
    fi

# Default to an interactive shell
CMD ["/bin/bash"]