Update Dockerfile

Dockerfile

@@ -1,10 +1,11 @@
 FROM nvidia/cuda:12.1.0-cudnn8-devel-ubuntu22.04
 # Non-interactive APT installs
+# Avoid any apt interactive prompts
 ENV DEBIAN_FRONTEND=noninteractive \
     PATH=/opt/conda/bin:$PATH \
     CUDA_HOME=/usr/local/cuda
 
-# Install system dependencies
+# Install system packages
 RUN apt-get update && apt-get install -y \
     wget git build-essential \
     libgl1-mesa-glx libgl1-mesa-dri xvfb ffmpeg \
@@ -16,25 +17,31 @@ RUN wget --quiet https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86
     rm /tmp/miniconda.sh && \
     conda clean -afy
 
-# Remove ALL Anaconda default channels to skip TOS prompt
-RUN conda config --remove channels defaults || true && \
-    conda config --remove channels https://repo.anaconda.com/pkgs/main || true && \
-    conda config --remove channels https://repo.anaconda.com/pkgs/r || true && \
+# Remove ALL Anaconda default channels (system + user configs)
+RUN rm -f /opt/conda/.condarc && \
+    conda config --system --remove-key channels || true && \
+    conda config --remove-key channels || true && \
+    conda config --system --add channels conda-forge && \
+    conda config --system --set channel_priority strict && \
     conda config --add channels conda-forge && \
     conda config --set channel_priority strict
 
-# Create environment from conda-forge only
-RUN conda create -n appenv python=3.10 ffmpeg=7 -y && conda clean -afy
+# This prevents Conda from auto-adding defaults during env creation
+ENV CONDA_FORGE=1 \
+    CONDA_AUTO_UPDATE_CONDA=false
+
+# Create environment using ONLY conda-forge
+RUN conda create --override-channels -n appenv -c conda-forge python=3.10 ffmpeg=7 -y && conda clean -afy
 SHELL ["conda", "run", "-n", "appenv", "/bin/bash", "-c"]
 
-# Copy requirements first (for Docker layer caching)
+# Copy requirements
 WORKDIR /workspace
 COPY requirements.txt .
 
-# Install Python dependencies (flash-attn compiles here)
+# Install pip dependencies
 RUN pip install --upgrade pip && pip install --no-cache-dir -r requirements.txt
 
-# Copy rest of project files
+# Copy rest of code
 COPY . .
 
 CMD ["conda", "run", "--no-capture-output", "-n", "appenv", "python", "finetune/app.py"]