In order to provide a spell check service we use LanguageTool: http://wiki.languagetool.org/public-http-api

Port 8010 is used here only to avoid collisions.

docker build .
docker run -p 8010:80 <image_id>

It is possible to add Hunspell/Morfologik dictionaries dynamically to Languagetool. They will allow spell check but not grammar checks (which requires more rules).

To add more languages:

• Download Hunspell dictionary (.dic and .aff). Possibles sources are listed at https://hunspell.github.io. Put it in a new folder in extra_dics.
• Optionally, it should be possible to convert them to Morfologik format (.dict) to obtain quicker suggestions.
• Download a list of the most common words in the new language from there. Put the first 10K words in a common_words.txt file in the same directory. It is required by languagetool to be able to detect languages.
• Update server.properties to declare the new language. The language code in the key must match an entry in languagetool's list. For example:

lang-no = Norwegian Bokmål
lang-no-dictPath = /home/app/extra_dics/nb-NO/nb-NO.dic

Docker Hub automatically builds the image on every push and adds the latest tag to it. It can then be pulled with docker pull textmasterapps/spell_check

To tag it and push it manually run:

docker build -t textmasterapps/spell_check:<image_tag> .
docker login
docker push textmasterapps/spell_check:<image_tag>

To get a list of available languages

curl http://<docker_ip>:8010/v2/languages

(pipe it to | python -m json.tool to pretty print the JSON)

To proofread text

curl --data "language=en-US&text=The house are big." http://<docker_ip>:8010/v2/check

yields

[...]
message: "Possible agreement error - use third-person verb forms for singular and mass nouns: "is"."
[...]