build texlive server

Dockerfile

@@ -11,22 +11,40 @@ RUN opam exec -- dune build bin/main.exe
 FROM debian:12-slim
 WORKDIR /app
 
-# Install native system dependencies and a minimal TeX Live profile
+# Configure apt to retry downloads up to 3 times if a packet gets corrupted
+RUN echo 'Acquire::Retries "5";' > /etc/apt/apt.conf.d/80-retries
+
+# 1. Install native system dependencies and a minimal TeX Live profile
 RUN apt-get update && apt-get install -y --no-install-recommends \
     libssl3 \
     libev4 \
     ca-certificates \
-    #     texlive-latex-base \
-    #     texlive-latex-recommended \
-    #     texlive-fonts-recommended \
-    #     # tlmgr is the TeX Live package manager; we use it to grab chess assets
-    #     texlive-games \ 
+    wget \
+    tar \
+    perl \
     && rm -rf /var/lib/apt/lists/*
 
-# Copy the compiled native OCaml binary from Stage 1
-COPY --from=builder /app/_build/default/bin/main.exe ./server
+# 2. Download and run the TeX Live CTAN installer script
+RUN wget --tries=5 https://mirror.ctan.org/systems/texlive/tlnet/install-tl-unx.tar.gz && \
+    tar -xzf install-tl-unx.tar.gz && \
+    rm install-tl-unx.tar.gz && \
+    cd install-tl-* && \
+    echo "selected_scheme scheme-basic" > profile && \
+    ./install-tl -profile profile && \
+    cd .. && \
+    rm -rf install-tl-*
 
-# Copy the static assets folder
+# 3. FIX: Ensure the dynamic path to tlmgr matches whatever year CTAN is currently on
+ENV PATH="/usr/local/texlive/2026/bin/x86_64-linux:${PATH}"
+ENV PATH="/usr/local/texlive/2025/bin/x86_64-linux:${PATH}"
+ENV PATH="/usr/local/texlive/2024/bin/x86_64-linux:${PATH}"
+# Fallback to absolute standard binary bin location
+ENV PATH="/usr/local/texlive/bin/x86_64-linux:${PATH}"
+
+# 3. Install TexLive packages needed for rendering a chess game
+RUN tlmgr install parskip pgf chessboard etoolbox ifmtarg xifthen skaknew lambda-lists xkeyval chessfss skak xskak
+
+COPY --from=builder /app/_build/default/bin/main.exe ./server
 COPY ./static ./static
 
 EXPOSE 8080