spaCy Docker Image with CoNLL-U Support

Docker image for spaCy POS tagging, lemmatization and dependency parsing with support for input and output in CoNLL-U format.

This is a slim, focused implementation extracted from sota-pos-lemmatizers, originally developed by José Angel Daza, following the same pattern as conllu-treetagger-docker.

Features

• Multi-language support: Works with any spaCy model for 70+ languages
• CoNLL-U input/output: Reads and writes CoNLL-U format
• On-demand model fetching: Models are downloaded on first run and cached in /local/models
• GermaLemma integration: Enhanced lemmatization for German (optional, German models only)
• Morphological features: Extracts and formats morphological features in CoNLL-U format
• Dependency parsing: Optional dependency relations (HEAD/DEPREL columns)
• Flexible configuration: Environment variables for batch size, chunk size, timeouts, etc.

Installation

From Docker Hub

docker pull korap/conllu-spacy

From source

git clone https://github.com/KorAP/conllu-spacy-docker.git
cd conllu-spacy-docker
make

Usage

Basic usage

# Default: German model with dependency parsing and GermaLemma
docker run --rm -i korap/conllu-spacy < input.conllu > output.conllu

Without dependency parsing

# Disable dependency parsing for faster processing
docker run --rm -i korap/conllu-spacy -d < input.conllu > output.conllu

Using different language models

# Use a smaller German model
docker run --rm -i korap/conllu-spacy -m de_core_news_sm < input.conllu > output.conllu

# Use French model
docker run --rm -i korap/conllu-spacy -m fr_core_news_lg < input.conllu > output.conllu

# Use English model (disable GermaLemma for non-German)
docker run --rm -i korap/conllu-spacy -m en_core_web_lg -g < input.conllu > output.conllu

Persisting Models

To avoid downloading the language model on every run, mount a local directory to /local/models:

chmod 777 /path/to/local/models
docker run --rm -i -v /path/to/local/models:/local/models korap/conllu-spacy < input.conllu > output.conllu

The first run will download the model to /path/to/local/models/, and subsequent runs will reuse it.

Preloading Models

There are several ways to preload models before running the container:

Option 1: Using the preload script (recommended)

# Preload the default model (de_core_news_lg)
./preload-models.sh

# Preload a specific model
./preload-models.sh de_core_news_sm

# Preload to a custom directory
./preload-models.sh de_core_news_lg /path/to/models

# Then run with the preloaded models
docker run --rm -i -v ./models:/local/models korap/conllu-spacy < input.conllu

Option 2: Build image with models included

# Build an image with models pre-installed
docker build -f Dockerfile.with-models -t korap/conllu-spacy:with-models .

# Run without needing to mount volumes
docker run --rm -i korap/conllu-spacy:with-models < input.conllu > output.conllu

Edit Dockerfile.with-models to include additional models (sm, md) by uncommenting the relevant lines.

Option 3: Manual download

# Create models directory
mkdir -p ./models

# Download using a temporary container
docker run --rm -v ./models:/models python:3.12-slim bash -c "
  pip install -q spacy &&
  python -m spacy download de_core_news_lg &&
  python -c 'import spacy, shutil, site;
  shutil.copytree(site.getsitepackages()[0] + \"/de_core_news_lg\", \"/models/de_core_news_lg\")'
"

# Use the preloaded model
docker run --rm -i -v ./models:/local/models korap/conllu-spacy < input.conllu

Running with korapxmltool

korapxmltool, which includes korapxml2conllu as a shortcut, can be downloaded from https://github.com/KorAP/korapxmltool.

korapxml2conllu goe.zip | docker run --rm -i korap/conllu-spacy

Generate a spaCy-tagged KorAP XML zip directly

korapxmltool -A "docker run --rm -i korap/conllu-spacy" -t zip goe.zip

Command-line Options

Usage: docker run --rm -i korap/conllu-spacy [OPTIONS]

Options:
  -h            Display help message
  -m MODEL      Specify spaCy model (default: de_core_news_lg)
  -L            List available/installed models
  -V            Display spaCy version information
  -d            Disable dependency parsing (faster processing)
  -g            Disable GermaLemma (use spaCy lemmatizer only)

Version Information

To check which version of conllu-spacy-docker and its components are installed:

docker run --rm korap/conllu-spacy -V

Example output:

=== Version Information ===
conllu-spacy-docker version: 3.8.11-3
spaCy version: 3.8.11
GermaLemma version: 0.1.3
Python version: 3.12.1

Environment Variables

You can customize processing behavior with environment variables:

docker run --rm -i \
  -e SPACY_USE_DEPENDENCIES="False" \
  -e SPACY_USE_GERMALEMMA="True" \
  -e SPACY_CHUNK_SIZE="10000" \
  -e SPACY_BATCH_SIZE="1000" \
  -e SPACY_N_PROCESS="1" \
  -e SPACY_PARSE_TIMEOUT="30" \
  -e SPACY_MAX_SENTENCE_LENGTH="500" \
  korap/conllu-spacy < input.conllu > output.conllu

Available environment variables:

• SPACY_USE_DEPENDENCIES: Enable/disable dependency parsing (default: "True")
• SPACY_USE_GERMALEMMA: Enable/disable GermaLemma (default: "True")
• SPACY_CHUNK_SIZE: Number of sentences to process per chunk (default: 20000)
• SPACY_BATCH_SIZE: Batch size for spaCy processing (default: 2000)
• SPACY_N_PROCESS: Number of processes (default: 10)
• SPACY_PARSE_TIMEOUT: Timeout for dependency parsing per sentence in seconds (default: 30)
• SPACY_MAX_SENTENCE_LENGTH: Maximum sentence length for dependency parsing in tokens (default: 500)

Examples

# Fast processing: disable dependency parsing
docker run --rm -i korap/conllu-spacy -d < input.conllu > output.conllu

# Use spaCy lemmatizer only (without GermaLemma)
docker run --rm -i korap/conllu-spacy -g < input.conllu > output.conllu

# Smaller model for faster download
docker run --rm -i korap/conllu-spacy -m de_core_news_sm < input.conllu > output.conllu

# Persistent model storage
docker run --rm -i -v ./models:/local/models korap/conllu-spacy < input.conllu > output.conllu

Miscellaneous commands

List installed models:

docker run --rm -i korap/conllu-spacy -L

Open a shell within the container:

docker run --rm -it --entrypoint /bin/bash korap/conllu-spacy

Supported Languages and Models

Any spaCy model can be specified with the -m option. Models will be downloaded automatically on first use.

spaCy provides trained models for 70+ languages. See spaCy Models for the complete list.

Example: German models (default)

• de_core_news_lg (default, 560MB) - Large model, best accuracy
• de_core_news_md (100MB) - Medium model, balanced
• de_core_news_sm (15MB) - Small model, fastest

Example: French models

# Use French small model
docker run --rm -i -v ./models:/local/models korap/conllu-spacy -m fr_core_news_sm < input.conllu

• fr_core_news_lg (560MB) - Large French model
• fr_core_news_md (100MB) - Medium French model
• fr_core_news_sm (15MB) - Small French model

Example: English models

# Use English model
docker run --rm -i -v ./models:/local/models korap/conllu-spacy -m en_core_web_lg < input.conllu

• en_core_web_lg (560MB) - Large English model
• en_core_web_md (100MB) - Medium English model
• en_core_web_sm (15MB) - Small English model

Note: GermaLemma integration only works with German models. For other languages, the standard spaCy lemmatizer is used (with -g flag to disable GermaLemma).

Performance

From the sota-pos-lemmatizers benchmarks on the TIGER corpus (50,472 sentences):

Configuration	Lemma Acc	POS Acc	POS F1	sents/sec
spaCy + GermaLemma	90.98	99.07	95.84	1,230
spaCy (without GermaLemma)	85.33	99.07	95.84	1,577

Note: Disabling dependency parsing (-d flag) significantly improves processing speed while maintaining POS tagging and lemmatization quality.

Architecture

The project consists of:

• Dockerfile: Multi-stage build for optimized image size
• docker-entrypoint.sh: Entry point script that handles model fetching and CLI argument parsing
• systems/parse_spacy_pipe.py: Main spaCy processing pipeline
• lib/CoNLL_Annotation.py: CoNLL-U format parsing and token classes
• my_utils/file_utils.py: File handling utilities for chunked processing

Credits

Based on the sota-pos-lemmatizers evaluation project, originally by José Angel Daza and Marc Kupietz, with contributions by Rebecca Wilm, follows the pattern established by conllu-treetagger-docker.

• spaCy: https://spacy.io/
• GermaLemma: https://github.com/WZBSocialScienceCenter/germalemma

License

This project's source code is licensed under the BSD 2-Clause License.

See, however, the licenses of the individual components:

• spaCy: MIT License
• GermaLemma: Apache 2.0 License