FROM ubuntu:22.04

ENV DEBIAN_FRONTEND=noninteractive

# Minimal deps for ttyd + healthcheck
RUN apt-get update && apt-get install -y \
    wget \
    curl \
    ca-certificates \
    libwebsockets15 \
    tini \
    && rm -rf /var/lib/apt/lists/*

# Download ttyd static binary
RUN ARCH=$(uname -m) && \
    if [ "$ARCH" = "x86_64" ]; then DL_ARCH="x86_64"; else DL_ARCH="aarch64"; fi && \
    wget -q -O /usr/local/bin/ttyd \
      https://github.com/tsl0922/ttyd/releases/download/1.7.7/ttyd.${DL_ARCH} && \
    chmod +x /usr/local/bin/ttyd

# ⚠️ HF mounts persistent storage at /data — create it explicitly
RUN mkdir -p /data && chmod 777 /data
WORKDIR /data

# Config
ENV APP_PORT=7860
# Use simple alphanumeric password to avoid shell parsing issues
ENV TERMINAL_PASSWORD="changeme123"

EXPOSE 7860

# Health check so HF knows container is ready
HEALTHCHECK --interval=15s --timeout=5s --start-period=30s --retries=3 \
  CMD curl -sf -u admin:${TERMINAL_PASSWORD} http://localhost:${APP_PORT}/ || exit 1

ENTRYPOINT ["/usr/bin/tini", "--"]

# ⚠️ Critical flags: --interface 0.0.0.0 + bind to /data
CMD ["/usr/local/bin/ttyd", \
     "--writable", \
     "--interface", "0.0.0.0", \
     "--port", "${APP_PORT}", \
     "--credential", "admin:changeme123", \
     "bash"]