Add build script

build.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+USER_DIR=$(readlink -f "$1")
+WORKDIR=$(mktemp -d -p "$USER_DIR")
+
+cd "$WORKDIR" || exit 1
+
+# Build PDFs from LaTeX. Do the build twice to sort out any bookmarks.
+find "$USER_DIR" -type f -name '*.tex' -print0 | while IFS= read -r -d '' file; do
+  echo ">>> $file"
+  ls -la "$file"
+  output=$(dirname "$file")/$(basename "$file" .tex).pdf
+  if [ -f "$output" ]; then
+      echo "Skipping $file as already built"
+      exit 0
+  fi
+  echo "$file - $output"
+  HOME=$(pwd) SOURCE_DATE_EPOCH=1622905527 pdflatex "$file" || exit 1
+  HOME=$(pwd) SOURCE_DATE_EPOCH=1622905527 pdflatex "$file" || exit 1
+  mv "$(basename "$output")" "$output" || exit 1
+done
+
+cd "$USER_DIR" || exit 1
+rm -r "$WORKDIR"