FROM debian:bookworm

# Install prerequisites for Docker CLI
RUN apt update && \
    apt install --no-install-recommends -y \
        ca-certificates curl gnupg dpkg lsb-release && \
    rm -rf /var/lib/apt/lists/*

# Add Docker’s official GPG key and repository
RUN install -m 0755 -d /etc/apt/keyrings && \
    curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /usr/share/keyrings/docker-ce.gpg && \
    echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-ce.gpg] \
    https://download.docker.com/linux/debian $(lsb_release -sc) stable" > /etc/apt/sources.list.d/docker.list

# Install Docker CLI (no daemon)
RUN apt update && \
    apt install --no-install-recommends -y \
        docker-ce-cli docker-compose-plugin && \
    rm -rf /var/lib/apt/lists/*

CMD ["bash"]