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web/backend/Dockerfile

@@ -1,10 +1,11 @@
 FROM python:3.13-slim
 
-# Install FFmpeg and system dependencies
+# Install FFmpeg, system dependencies, and gosu from APT
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         ffmpeg \
         ca-certificates \
+        gosu \
         && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/*
@@ -16,39 +17,29 @@ ENV PYTHONDONTWRITEBYTECODE=1 \
 # Set working directory
 WORKDIR /app
 
-# ------------------------------------------------------------
-# Copy and install Python dependencies
-# ------------------------------------------------------------
+# Copy requirements and install Python dependencies
 COPY web/backend/requirements-web.txt .
 RUN pip install --no-cache-dir -r requirements-web.txt
 
-# ------------------------------------------------------------
-# Copy the backend application code
-# ------------------------------------------------------------
+# Copy backend code
 COPY web/backend /app/backend
 
-# ------------------------------------------------------------
-# Copy and install the audio_splitter package
-# ------------------------------------------------------------
+# Copy and install audio_splitter package
 COPY audio_splitter /app/audio_splitter
 COPY setup.py pyproject.toml README.md /app/
-
-# Install audio_splitter as a package
 RUN pip install --no-cache-dir /app
 
-# ------------------------------------------------------------
 # Create a non-root user
-# ------------------------------------------------------------
 RUN addgroup --system --gid 1000 appgroup && \
     adduser --system --uid 1000 --ingroup appgroup appuser && \
     chown -R appuser:appgroup /app
 
-USER appuser
+# Copy entrypoint script
+COPY web/backend/docker-entrypoint.sh /docker-entrypoint.sh
+RUN chmod +x /docker-entrypoint.sh
 
-# ------------------------------------------------------------
-# Expose port and start
-# ------------------------------------------------------------
+# Set entrypoint
+ENTRYPOINT ["/docker-entrypoint.sh"]
+
+# Expose port
 EXPOSE 8000
-
-# PYTHONPATH is already /app by default because we set WORKDIR /app
-CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "8000"]

web/backend/docker-entrypoint.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+set -e
+
+# Detect if we are running as root (default)
+if [ "$(id -u)" = "0" ]; then
+    # Ensure the temp directory exists and set ownership
+    if [ -d "/tmp/audio_splitter_web" ]; then
+        echo "Setting ownership of /tmp/audio_splitter_web to appuser:appgroup"
+        chown -R appuser:appgroup /tmp/audio_splitter_web
+    else
+        echo "Creating /tmp/audio_splitter_web and setting ownership"
+        mkdir -p /tmp/audio_splitter_web
+        chown -R appuser:appgroup /tmp/audio_splitter_web
+    fi
+
+    # Drop privileges and run uvicorn using gosu
+    exec gosu appuser uvicorn backend.main:app --host 0.0.0.0 --port 8000
+else
+    # If not root, just run directly
+    exec uvicorn backend.main:app --host 0.0.0.0 --port 8000
+fi