Dockerfile.train

# Training Dockerfile for Northflank GPU jobs.
#
# Uses CUDA base image + installs Unsloth, TRL, vLLM for
# Scientist GRPO and Lab Manager SFT training.
#
# Build:  docker build -f Dockerfile.train -t replicalab-train .
# Run:    docker run --gpus all -e MODE=train replicalab-train

FROM nvidia/cuda:12.4.1-devel-ubuntu22.04

ENV DEBIAN_FRONTEND=noninteractive
ENV PYTHONUNBUFFERED=1

WORKDIR /app

# System deps
RUN apt-get update && apt-get install -y --no-install-recommends \
    python3.11 python3.11-dev python3.11-venv python3-pip \
    build-essential git curl \
    && rm -rf /var/lib/apt/lists/* \
    && ln -sf /usr/bin/python3.11 /usr/bin/python \
    && ln -sf /usr/bin/python3.11 /usr/bin/python3

# Upgrade pip
RUN python -m pip install --no-cache-dir --upgrade pip setuptools wheel

# Install server deps first (better layer caching)
COPY server/requirements.txt ./server/requirements.txt
RUN pip install --no-cache-dir -r server/requirements.txt

# Install training deps (heavy — torch, unsloth, trl, vllm)
COPY requirements-train.txt ./requirements-train.txt
RUN pip install --no-cache-dir -r requirements-train.txt

# Copy full project
COPY replicalab/ ./replicalab/
COPY server/ ./server/
COPY data/ ./data/
COPY scripts/ ./scripts/
COPY pyproject.toml ./
COPY ReplicaLab_50_Scenarios_Training_Plan.md ./

# Install replicalab package
RUN pip install --no-cache-dir . --no-deps

# Make scripts executable
RUN chmod +x scripts/train.sh

# Default env vars
ENV MODE=server
ENV REPLICALAB_PERSIST_ROOT=/app/outputs/training
ENV SEED_COUNT=8
ENV MAX_STEPS=300
ENV MODEL_NAME=Qwen/Qwen3.5-9B

EXPOSE 7860

# Entrypoint dispatches based on MODE env var
CMD ["bash", "scripts/train.sh"]