Upload bootstrap.sh with huggingface_hub

bootstrap.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+# ============================================================================
+# bootstrap.sh — Zero-image entrypoint for RunPod Instant Clusters.
+#
+# This script runs inside the stock runpod/pytorch base image (no custom
+# Docker build). It:
+#   1. Fixes the Python 3.10 → 3.12 symlink mismatch
+#   2. Exports environment variables matching Dockerfile.slim
+#   3. Configures SSH for multi-node communication
+#   4. Installs vim (apt, one-time)
+#   5. Creates workspace directories
+#   6. Hands off to slim-entrypoint.sh (pip deps + app launch)
+#
+# The HF download of f13rnd/training-runtime into /opt/f13/ is done by the
+# RunPod CMD *before* this script runs, so all files are already in place.
+#
+# RunPod template CMD:
+#   bash -c "pip install -q huggingface_hub && \
+#     hf download f13rnd/training-runtime --repo-type dataset \
+#       --local-dir /opt/f13 ${HF_TOKEN:+--token $HF_TOKEN} && \
+#     chmod +x /opt/f13/*.sh /opt/f13/scripts/*.sh && \
+#     exec /opt/f13/bootstrap.sh"
+# ============================================================================
+
+echo "[bootstrap] Starting zero-image bootstrap..."
+
+# --- Python 3.12 symlink fix ---
+# The runpod/pytorch base ships python3 -> 3.10 but pip/torch target 3.12.
+if [ -x /usr/bin/python3.12 ]; then
+    ln -sf /usr/bin/python3.12 /usr/bin/python3
+    ln -sf /usr/bin/python3.12 /usr/bin/python
+    echo "[bootstrap] python3 -> python3.12"
+fi
+
+# --- Environment variables (match Dockerfile.slim) ---
+export DEBIAN_FRONTEND=noninteractive
+export PYTHONUNBUFFERED=1
+export PYTORCH_ALLOC_CONF="${PYTORCH_ALLOC_CONF:-expandable_segments:True}"
+export HF_HOME="${HF_HOME:-/workspace/hf-cache}"
+export MODELSCOPE_CACHE="${MODELSCOPE_CACHE:-/workspace/ms-cache}"
+export HF_HUB_DISABLE_PROGRESS_BARS="${HF_HUB_DISABLE_PROGRESS_BARS:-0}"
+export HF_HUB_VERBOSITY="${HF_HUB_VERBOSITY:-info}"
+export TRANSFORMERS_VERBOSITY="${TRANSFORMERS_VERBOSITY:-info}"
+
+# --- apt packages (idempotent) ---
+if ! command -v vim &>/dev/null; then
+    apt-get update -qq && apt-get install -y --no-install-recommends vim \
+        && rm -rf /var/lib/apt/lists/*
+    echo "[bootstrap] vim installed"
+fi
+
+# --- SSH setup ---
+mkdir -p /var/run/sshd
+if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
+    ssh-keygen -A
+fi
+sed -i 's/#*PermitRootLogin.*/PermitRootLogin yes/' /etc/ssh/sshd_config
+
+# --- Workspace directories ---
+mkdir -p /workspace/data /workspace/output /workspace/config
+
+echo "[bootstrap] Bootstrap complete, handing off to slim-entrypoint.sh"
+exec /opt/f13/slim-entrypoint.sh "$@"