FROM ubuntu:22.04 AS builder

# Set noninteractive installation and locale
ENV DEBIAN_FRONTEND=noninteractive
ENV LANG C.UTF-8
ENV LC_ALL C.UTF-8

# Install build dependencies
RUN apt-get update && apt-get install -y \
    git \
    gcc \
    make \
    autoconf \
    automake \
    pkg-config \
    libtool \
    build-essential \
    libncurses5-dev \
    libncursesw5-dev \
    libevent-dev \
    bison \
    locales \
    && rm -rf /var/lib/apt/lists/*

# Set locale
RUN locale-gen C.UTF-8

# Clone and build libevent statically
WORKDIR /src
RUN git clone https://github.com/libevent/libevent.git \
    && cd libevent \
    && ./autogen.sh \
    && CFLAGS="-O2 -static" ./configure --prefix=/usr --disable-shared --enable-static \
    && make \
    && make install

# Clone and build tmux with static linking and specific GLIBC targeting
WORKDIR /src
RUN git clone https://github.com/tmux/tmux.git \
    && cd tmux \
    && sh autogen.sh \
    && LDFLAGS="-static" CFLAGS="-O2 -static -D_GNU_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-strong" ./configure --enable-static \
    && make LDFLAGS="-static" CFLAGS="-O2 -static -D_GNU_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-strong"

# Create a runtime image
FROM ubuntu:22.04
COPY --from=builder /src/tmux/tmux /usr/local/bin/tmux
ENV LANG C.UTF-8
ENV LC_ALL C.UTF-8
CMD ["tmux"]