diff --git a/docker/create_meta.py b/docker/create_meta.py
new file mode 100644
index 0000000..a2078bd
--- /dev/null
+++ b/docker/create_meta.py
@@ -0,0 +1,161 @@
+#!/usr/bin/env python3
+"""
+This code is generate by ChatGPT 5.1, as test automatic script to generate _meta.js file
+
+Generate _meta.js with Math/CSE link entries and labeled sections
+from the original _meta.js.
+
+Usage:
+    python generate_meta.py [path/to/_meta.js]
+
+If no path is given, it assumes _meta.js is next to this script.
+"""
+
+import sys
+from pathlib import Path
+import re
+
+
+COMMENT_BLOCK = [
+    "  /**\n",
+    '   * Do not remove the labels "Math Courses Start"\n',
+    '   * and "Math Courses End" and "CSE Courses Start" and "CSE Courses End"\n',
+    "   * or the separated builds will not work.\n",
+    "   * \n",
+    "   * WE USE THESE LABELS TO BUILD THE SEPARATED WEBSITES FOR MATH AND CSE COURSES.\n",
+    "   */\n",
+]
+
+
+def parse_properties(lines):
+    """
+    Parse top-level properties (indented 4 spaces) of the export default object.
+    Returns:
+        header_lines: lines up to and including 'export default {'
+        footer_lines: closing '}' (and anything after)
+        props: dict name -> list of lines for that property
+        order: order of property names as they appeared
+    """
+    # find 'export default {' line
+    export_idx = None
+    for i, line in enumerate(lines):
+        if "export default" in line:
+            export_idx = i
+            break
+    if export_idx is None:
+        raise ValueError("No 'export default' found in file.")
+
+    header = lines[: export_idx + 1]
+    body = lines[export_idx + 1 :]
+
+    # last non-empty line is closing brace of the object
+    last_non_empty = len(lines) - 1
+    while last_non_empty >= 0 and lines[last_non_empty].strip() == "":
+        last_non_empty -= 1
+    footer = lines[last_non_empty:]
+
+    body_until_footer = body[: len(body) - len(footer) + 1]  # include blank before footer if any
+
+    prop_re = re.compile(r"^ {4}(\w+)\s*:")
+    props = {}
+    order = []
+
+    i = 0
+    n = len(body_until_footer)
+    while i < n:
+        line = body_until_footer[i]
+        m = prop_re.match(line)
+        if not m:
+            i += 1
+            continue
+        key = m.group(1)
+        start = i
+        brace_count = line.count("{") - line.count("}")
+        j = i + 1
+        while j < n and brace_count > 0:
+            brace_count += body_until_footer[j].count("{") - body_until_footer[j].count("}")
+            j += 1
+        block = body_until_footer[start:j]
+        props[key] = block
+        order.append(key)
+        i = j
+
+    return header, footer, props, order
+
+
+def build_links_block(keys):
+    """Generate *_link blocks for given course keys (Math* or CSE*)."""
+    out = []
+    for k in keys:
+        out.append(f"    {k}_link: {{\n")
+        out.append(f"      title: '{k}',\n")
+        out.append("      type: 'page',\n")
+        out.append(f"      href: '/{k}'\n")
+        out.append("    },\n")
+    return out
+
+
+def generate_new_meta(lines):
+    header, footer, props, order = parse_properties(lines)
+
+    math_keys = [k for k in order if k.startswith("Math")]
+    cse_keys = [k for k in order if k.startswith("CSE")]
+    other_keys = [k for k in order if k not in math_keys + cse_keys + ["menu"]]
+
+    if "menu" not in props:
+        raise ValueError("Expected a top-level 'menu' property.")
+
+    out = []
+
+    # header (includes "export default {")
+    out.extend(header)
+    # comment block
+    out.extend(COMMENT_BLOCK)
+    # menu
+    out.extend(props["menu"])
+
+    # Math links
+    out.extend(build_links_block(math_keys))
+
+    # Math Courses section
+    out.append("    /* Math Courses Start */\n")
+    for k in math_keys:
+        out.extend(props[k])
+    out.append("    /* Math Courses End */\n")
+
+    # CSE links
+    out.extend(build_links_block(cse_keys))
+
+    # CSE Courses section
+    out.append("    /* CSE Courses Start */\n")
+    for k in cse_keys:
+        out.extend(props[k])
+    out.append("    /* CSE Courses End */\n")
+
+    # other properties (Swap, index, about, contact, etc.) in original order
+    for k in other_keys:
+        out.extend(props[k])
+
+    # footer (closing brace, etc.)
+    out.extend(footer)
+
+    return out
+
+
+def main():
+    if len(sys.argv) > 1:
+        meta_path = Path(sys.argv[1]).resolve()
+    else:
+        meta_path = Path(__file__).with_name("_meta.js")
+
+    if not meta_path.exists():
+        raise SystemExit(f"Meta file not found: {meta_path}")
+
+    lines = meta_path.read_text(encoding="utf-8").splitlines(keepends=True)
+    new_lines = generate_new_meta(lines)
+    meta_path.write_text("".join(new_lines), encoding="utf-8")
+    print(f"Rewrote meta file at {meta_path}")
+
+
+if __name__ == "__main__":
+    main()