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Merge pull request #87 from thawn/copilot/migrate-docker-to-python-backend
Migrate docker container from old perl to new python backend with security hardening
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‎build/docker/Dockerfile‎

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FROM thawn/ttmp32gme-deps
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WORKDIR /ttmp32gme
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COPY src .
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ENV APPDATA=/var/lib/
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RUN mkdir config ${APPDATA}/ttmp32gme /mnt/tiptoi
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# Use modern Python 3.12 slim image as base
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FROM python:3.12-slim
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# Set working directory
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WORKDIR /app
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# Install system dependencies (wget, unzip for downloads, ffmpeg for audio conversion, git for setuptools-scm)
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RUN apt-get update && \
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apt-get install -y --no-install-recommends \
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wget \
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unzip \
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xz-utils \
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ca-certificates \
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ffmpeg \
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git && \
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rm -rf /var/lib/apt/lists/*
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# Install tttool (from releases)
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# Note: --no-check-certificate is required in some build environments due to SSL certificate chain issues.
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# This is a known issue with intermediate certificates in Docker builds.
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# For production builds with proper certificate setup, this flag can be removed.
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RUN TTTOOL_VERSION="1.8.1" && \
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wget --no-check-certificate "https://github.com/entropia/tip-toi-reveng/releases/download/${TTTOOL_VERSION}/tttool-${TTTOOL_VERSION}.zip" && \
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unzip -o -q "tttool-${TTTOOL_VERSION}.zip" && \
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chmod +x tttool && \
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mv tttool /usr/local/bin/ && \
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rm "tttool-${TTTOOL_VERSION}.zip"
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# Copy application source
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COPY . /app/
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# Install Python dependencies
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# Note: --trusted-host flags are required in some build environments due to SSL certificate chain issues.
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# This is a known issue with intermediate certificates in Docker builds.
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# For production builds with proper certificate setup, these flags can be removed.
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RUN pip install --no-cache-dir --trusted-host pypi.org --trusted-host files.pythonhosted.org -e .
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# Create a non-root user for running the application
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# Using UID/GID 1000 which is common for the first user on most Linux systems
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# This allows for better compatibility with Podman's user namespace mapping
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RUN groupadd -g 1000 ttmp32gme && \
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useradd -r -u 1000 -g ttmp32gme -m -d /home/ttmp32gme -s /bin/bash ttmp32gme
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# Set up directories and copy config
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# Use proper permissions instead of 777 for security
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RUN mkdir -p /data/library /mnt/tiptoi && \
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cp /app/src/ttmp32gme/config.sqlite /data/ && \
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chown -R ttmp32gme:ttmp32gme /data /mnt/tiptoi && \
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chmod -R 775 /data && \
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chmod 664 /data/config.sqlite
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# Declare volumes for persistent data
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# This helps Podman/Docker users understand which directories should be mounted
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VOLUME ["/data", "/mnt/tiptoi"]
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# Expose port 8080
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EXPOSE 8080
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CMD perl ttmp32gme.pl --debug=2 --host=0.0.0.0 --port=8080 --configdir=/ttmp32gme/config
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# HEALTHCHECK --interval=5m --timeout=3s \
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# CMD curl -f http://localhost:8080/ || exit 1
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# Switch to non-root user
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USER ttmp32gme
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# Run the Python backend
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CMD ["python", "-m", "ttmp32gme.ttmp32gme", "--host=0.0.0.0", "--port=8080", "--database=/data/config.sqlite", "--library=/data/library"]
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# Optional health check
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HEALTHCHECK --interval=5m --timeout=3s \
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CMD wget -q --spider http://localhost:8080/ || exit 1

‎build/docker/README.md‎

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A docker image for ttmp32gme.
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# ttmp32gme Docker/Podman Container
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Set the environment variable `HOST=0.0.0.0` to make ttmp32gme accessible to other computers in your network.
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A containerized version of ttmp32gme that converts MP3/audio files into TipToi GME files.
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## Features
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- **Security**: Runs as non-root user (UID/GID 1000)
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- **Podman Compatible**: Works seamlessly with Podman's user namespace mapping
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- **Persistent Storage**: Separate volumes for configuration and TipToi device
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## Quick Start
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### Using Docker
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```bash
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docker run -d \
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--rm \
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--name ttmp32gme \
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--publish 8080:8080 \
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--volume ttmp32gme-data:/data \
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--volume /path/to/tiptoi:/mnt/tiptoi \
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thawn/ttmp32gme:latest
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```
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### Using Podman
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```bash
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podman run -d \
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--rm \
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--name ttmp32gme \
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--publish 8080:8080 \
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--volume ttmp32gme-data:/data \
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--volume /path/to/tiptoi:/mnt/tiptoi:Z \
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thawn/ttmp32gme:latest
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```
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**Note for Podman users**: The `:Z` flag on the TipToi volume enables proper SELinux labeling for shared access.
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## Volume Mounts
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- **`/data`**: Application data (database, generated library files)
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- First run: Container initializes this directory with default config
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- Subsequent runs: Uses existing data for persistence
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- **`/mnt/tiptoi`**: TipToi pen mount point
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- Mount your TipToi device here to directly write generated files
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## User Permissions
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The container runs as user `ttmp32gme` (UID 1000, GID 1000).
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### For Podman Users
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Podman automatically maps the container user to your host user, so permissions work seamlessly:
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```bash
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# Your files will be owned by your user on the host
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podman run --rm \
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--volume ./my-data:/data \
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--volume /media/tiptoi:/mnt/tiptoi:Z \
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--publish 8080:8080 \
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thawn/ttmp32gme:latest
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```
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### For Docker Users
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If you encounter permission issues, you can use these options:
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1. **Option 1**: Match your user ID (recommended)
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```bash
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docker run --user $(id -u):$(id -g) \
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--volume ./my-data:/data \
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--volume /media/tiptoi:/mnt/tiptoi \
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--publish 8080:8080 \
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thawn/ttmp32gme:latest
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```
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2. **Option 2**: Adjust host directory permissions
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```bash
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sudo chown -R 1000:1000 ./my-data
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```
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## Accessing the Application
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Once running, open your web browser to:
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- **Local access**: http://localhost:8080
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- **Network access**: http://your-server-ip:8080
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## Environment Variables
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| Variable | Default | Description |
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|----------|---------|-------------|
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| HOST | 0.0.0.0 | Server bind address |
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| PORT | 8080 | Server port |
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Example with custom settings:
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```bash
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docker run -d \
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--rm \
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--publish 8080:8080 \
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--volume ${ttmp32gmeStorage}:/var/lib/ttmp32gme \
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--volume </path/to/tiptoi:/mnt/tiptoi \
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-env HOST=127.0.0.1 \
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-env PORT=8080 \
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--name ttmp32gme \
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thawn/ttmp32gme:latest
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--env HOST=127.0.0.1 \
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--env PORT=9000 \
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--publish 9000:9000 \
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--volume ttmp32gme-data:/data \
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thawn/ttmp32gme:latest
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```
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## Security Features
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This container implements security best practices:
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- ✅ **Non-root user**: Runs as dedicated `ttmp32gme` user
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- ✅ **Minimal permissions**: Files owned by user with 775/664 permissions
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- ✅ **Explicit volumes**: Declared volume mount points
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- ✅ **Health checks**: Automatic container health monitoring
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- ✅ **Podman ready**: Full compatibility with Podman's rootless mode
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## Troubleshooting
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### Permission denied errors
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If you get "permission denied" errors when accessing volumes:
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**For Podman**:
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```bash
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# Add :Z flag for SELinux systems
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podman run --volume /path/to/data:/data:Z ...
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```
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**For Docker**:
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```bash
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# Match your user ID
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docker run --user $(id -u):$(id -g) ...
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```
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### Cannot write to TipToi device
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Ensure your TipToi device is mounted with write permissions:
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```bash
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# Check current permissions
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ls -la /media/tiptoi
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# If needed, adjust permissions
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sudo chmod 775 /media/tiptoi
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```

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