starcabbage/static-tesseract

A docker recipe to build a statically linked version of Tesseract, the opensource OCR software. Perfect for deployment on AWS Lambda or other cloud functions!

Static Tesseract

This is a Dockerfile, along with a helper docker-compose.yml file to help build a fully-static version of Tesseract 4.1.

The Dockerfile sets up a base Ubuntu 18.04 system into which Tesseract 4.1 is compiled.

The build.sh script is used to setup the container, download the built binary from within the container and then destroy the container.

After all this, you're left with a tesseract binary in the current folder that is statically linked.

This binary may be used in environments that don't let you install custom packages from the operating system's repository, like Google Cloud Functions and Amazon Lambda.

Dependencies

Make sure you've atleast Docker 19.3.04 and Docker Compose 1.24.0 installed. I have not tested any of this as working on older versions of Docker, although you might have some luck there since I don't do anything non-standard.

Execution

Simply run ./build.sh and make yourself a nice beverage. You'll have a statically linked tesseract binary built in a few minutes!

Debugging / Misc

SSH Into The Container

The container is run with a sleep infinity command so that you can open a terminal within it and poke around inside. This also lets you try alternative build flags and the like.

docker-compose exec tesseract /bin/bash

Delete Docker Artefacts

Sometimes you'd want to get rid of the intermediate images built during this build process.

docker image prune

Pre-Built Binaries

At some point I might add them to the releases within this repository. For now, these scripts shouldn't be very hard to run!