Merge pull request 'Docker package' (#2) from docker_package into main

Reviewed-on: #2

.dockerignore

@@ -0,0 +1,41 @@
+# Git
+.git/
+.gitignore
+
+# Python cache
+*.pyc
+__pycache__/
+*.pyo
+*.pyd
+
+# Build artifacts
+build/
+dist/
+*.egg-info/
+.eggs/
+
+# Virtual environments
+.venv
+venv/
+env/
+ENV/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+
+# License (not needed for installation)
+LICENSE
+
+# Docker files (not needed in build context)
+Dockerfile
+.dockerignore
+
+# Local test files
+test_data/
+*.mp3
+*.flac
+*.wav
+*.txt
+*.log

.gitignore

@@ -3,3 +3,4 @@ build/
 dist/
 *.egg-info/
 *.pyc
+test_data/

Dockerfile

@@ -0,0 +1,57 @@
+FROM python:3.13-slim
+
+# Install FFmpeg and dependencies required for gosu installation
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        ffmpeg \
+        ca-certificates \
+        wget \
+        gnupg \
+        dirmngr \
+        gnupg-agent && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+# Install gosu (lightweight tool for dropping privileges)
+RUN set -eux; \
+    dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
+    wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/1.17/gosu-$dpkgArch"; \
+    wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/1.17/gosu-$dpkgArch.asc"; \
+    export GNUPGHOME="$(mktemp -d)"; \
+    gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
+    gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
+    gpgconf --kill all; \
+    rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc; \
+    chmod +x /usr/local/bin/gosu; \
+    gosu --version
+
+# Set Python environment variables
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+# Set working directory
+WORKDIR /app
+
+# Copy package metadata and source code
+COPY setup.py pyproject.toml README.md ./
+COPY audio_splitter/ ./audio_splitter/
+
+# Install the package
+RUN pip install --no-cache-dir .
+
+# Create a non-root user with UID 1000
+RUN addgroup --system --gid 1000 appgroup && \
+    adduser --system --uid 1000 --ingroup appgroup appuser
+
+# Change ownership of /app to the container user (so it can write there if needed)
+RUN chown -R appuser:appgroup /app
+
+# Copy the entrypoint script
+COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+
+# Set the entrypoint
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
+
+# Default command (shows help if no arguments provided)
+CMD ["--help"]

README.md

@@ -2,7 +2,8 @@
 
 [![Python 3.8+](https://img.shields.io/badge/python-3.8+-blue.svg)](https://www.python.org/downloads/)
 [![FFmpeg](https://img.shields.io/badge/FFmpeg-required-green.svg)](https://ffmpeg.org/)
-[![License: MIT](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://opensource.org/license/gpl-3.0)
+[![License: GPLv3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
+[![Docker](https://img.shields.io/badge/Docker-ready-blue.svg)](https://www.docker.com/)
 
 **Split audio files into tracks using a flexible tracklist format.**
 
@@ -20,6 +21,8 @@
 - **Character replacement** – Replace problematic filename characters with a custom character
 - **Dry‑run mode** – Preview parsed tracks without splitting
 - **Skip existing files** – Avoid overwriting already‑extracted tracks
+- **Delete original** – Optionally remove the input file after successful splitting
+- **Docker image** – Run without installing dependencies; simple one‑line commands
 
 ---
 
@@ -43,8 +46,8 @@
 Clone the repository and install:
 
 ```bash
-git clone https://github.com/yourusername/audio-splitter.git
+git clone https://git.vmn.su/max/audio_splitter.git
-cd audio-splitter
+cd audio_splitter
 pip install .
 ```
 
@@ -54,15 +57,11 @@ Now the `audio_splitter` command is available globally:
 audio_splitter input.mp3 tracks.txt
 ```
 
-Or run directly without installation:
+> **Tip:** For development, install in editable mode: `pip install -e .`
-
-```bash
-python -m audio_splitter.main input.mp3 tracklist.txt
-```
 
 ---
 
-## Quick Start
+## 🚀 Quick Start
 
 ### 1. Prepare a tracklist file
 
@@ -81,9 +80,6 @@ Create a `tracks.txt` file with one track per line:
 ### 2. Run the splitter
 
 ```bash
-# If not installed
-python -m audio_splitter.main my_album.mp3 tracks.txt
-# If installed
 audio_splitter my_album.mp3 tracks.txt
 ```
 
@@ -147,6 +143,12 @@ Done!
 | `--tracklist-format FORMAT` | Custom tracklist format (default: `%ts %tn - %an`) |
 | `--skip-existing`           | Skip extraction if output file already exists      |
 
+### Other Options
+
+| Option              | Description                                               |
+| ------------------- | --------------------------------------------------------- |
+| `--delete-original` | Delete the original input file after successful splitting |
+
 ---
 
 ## 📝 Placeholders Reference
@@ -186,7 +188,7 @@ Done!
 If your tracklist uses `artist - title [time]`:
 
 ```bash
-python -m audio_splitter.main input.flac tracks.txt \
+audio_splitter input.flac tracks.txt \
   --tracklist-format "%an - %tn [%ts]"
 ```
 
@@ -195,14 +197,14 @@ python -m audio_splitter.main input.flac tracks.txt \
 Name files as `01 - Artist - Song.mp3`:
 
 ```bash
-python -m audio_splitter.main input.flac tracks.txt \
+audio_splitter input.flac tracks.txt \
   --output-template "%num - %an - %tn.%ext"
 ```
 
 ### Override album and comment
 
 ```bash
-python -m audio_splitter.main input.flac tracks.txt \
+audio_splitter input.flac tracks.txt \
   --album "Greatest Hits" \
   --comment "Live recording"
 ```
@@ -210,15 +212,21 @@ python -m audio_splitter.main input.flac tracks.txt \
 ### Merge multiple comments from input file
 
 ```bash
-python -m audio_splitter.main input.flac tracks.txt \
+audio_splitter input.flac tracks.txt \
   --merge-comments \
   --comment-separator " | "
 ```
 
+### Delete original file after splitting
+
+```bash
+audio_splitter input.flac tracks.txt --delete-original
+```
+
 ### Dry‑run to preview parsing
 
 ```bash
-python -m audio_splitter.main input.flac tracks.txt --dry-run
+audio_splitter input.flac tracks.txt --dry-run
 ```
 
 Output:
@@ -238,6 +246,69 @@ Dry‑run complete. No files were created.
 
 ---
 
+## 🐳 Docker
+
+You can run `audio_splitter` in a Docker container without installing Python or FFmpeg on your host.
+
+### Pull the Image (Optional)
+
+```bash
+docker pull yourusername/audio_splitter:latest
+```
+
+### Build the Image Locally
+
+```bash
+docker build -t audio_splitter .
+```
+
+### Usage
+
+**You must mount your working directory to `/data` inside the container.**  
+The container will automatically adjust permissions so that you can read input files and write output files.
+
+Simply provide the arguments as you would to the `audio_splitter` command:
+
+```bash
+docker run --rm -v $(pwd):/data audio_splitter /data/input.mp3 /data/tracks.txt [OPTIONS]
+```
+
+#### Examples
+
+**Basic split:**
+
+```bash
+docker run --rm -v $(pwd):/data audio_splitter /data/input.mp3 /data/tracks.txt
+```
+
+**With custom options:**
+
+```bash
+docker run --rm -v $(pwd):/data audio_splitter /data/input.mp3 /data/tracks.txt --album "Greatest Hits" --format mp3 --number-tracks
+```
+
+**Dry‑run:**
+
+```bash
+docker run --rm -v $(pwd):/data audio_splitter /data/input.mp3 /data/tracks.txt --dry-run
+```
+
+**Help:**
+
+```bash
+docker run --rm audio_splitter --help
+```
+
+### Output
+
+All output files are written to the mounted directory on your host (under the default `input_splits/` subdirectory, or any custom `--output-dir` you specify).
+
+### Permission Handling
+
+The container automatically adjusts ownership of the mounted `/data` directory so that the container user can read and write files there. No `--user` or `:z` flags are required.
+
+---
+
 ## 📂 Project Structure
 
 ```
@@ -252,7 +323,10 @@ audio_splitter/
 ├── metadata.py          # Metadata selection and building
 ├── formats.py           # Container format decision and validation
 ├── core.py              # Main orchestration logic
-└── main.py              # Command‑line interface
+├── main.py              # Command‑line interface
+├── docker-entrypoint.sh # Docker entrypoint script
+├── Dockerfile           # Docker image definition
+└── README.md            # This file
 ```
 
 ---
@@ -267,13 +341,13 @@ Contributions are welcome! Please follow these steps:
 4. Push to the branch (`git push origin feature/amazing-feature`)
 5. Open a Pull Request
 
-For bug reports or feature requests, please [open an issue](https://github.com/yourusername/audio-splitter/issues).
+For bug reports or feature requests, please [open an issue](https://git.vmn.su/max/audio_splitter/issues).
 
 ---
 
 ## 📄 License
 
-Distributed under the GPU GPL v3 or later. See [LICENSE](LICENSE) for more information.
+Distributed under the GNU General Public License v3 (or later). See the [LICENSE](LICENSE) file for more details.
 
 ---
 
@@ -281,10 +355,11 @@ Distributed under the GPU GPL v3 or later. See [LICENSE](LICENSE) for more infor
 
 - [FFmpeg](https://ffmpeg.org/) – the powerhouse behind audio processing
 - [Python](https://www.python.org/) – the language that makes it all possible
+- [gosu](https://github.com/tianon/gosu) – privilege dropping for Docker
 
 ---
 
 ## 📬 Contact
 
-**Maintainer:** [Maxim Vershinin](https://git.vmn.su/max)  
+**Maintainer:** Maxim Vershinin
-**Project Link:** [https://git.vmn.su/max/audio-splitter](https://git.vmn.su/max/audio-splitter)
+**Project Link:** [https://git.vmn.su/max/audio_splitter](https://git.vmn.su/max/audio_splitter)

docker-entrypoint.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+
+# Check if we are running as root (default)
+if [ "$(id -u)" = "0" ]; then
+    # If /data is a directory, change its ownership to the container user
+    if [ -d "/data" ]; then
+        echo "Setting ownership of /data to appuser:appgroup"
+        chown -R appuser:appgroup /data
+    fi
+
+    # Drop privileges and run audio_splitter with the provided arguments
+    exec gosu appuser audio_splitter "$@"
+else
+    # If not root, just run audio_splitter directly
+    # It's not supposed to be called
+    exec audio_splitter "$@"
+fi