Add tesseract-ocr container

tesseract is a popular OCR engine with AVX performance optimization Signed-off-by: jwang <jing.j.wang@intel.com>
2026-08-26 18:35:58 +00:00 · 2019-12-03 12:25:30 +00:00
parent 6cef03d7dd
commit c4fb6e9d24
3 changed files with 139 additions and 0 deletions
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+FROM clearlinux:latest AS builder
+MAINTAINER jing.j.wang@intel.com
+
+ARG swupd_args
+# Move to latest Clear Linux release to ensure
+# that the swupd command line arguments are
+# correct
+RUN swupd update --no-boot-update $swupd_args
+
+# Grab os-release info from the minimal base image so
+# that the new content matches the exact OS version
+COPY --from=clearlinux/os-core:latest /usr/lib/os-release /
+
+# Install additional content in a target directory
+# using the os version from the minimal base
+RUN source /os-release && \
+    mkdir /install_root \
+    && swupd os-install -V ${VERSION_ID} \
+    --path /install_root --statedir /swupd-state \
+    --bundles=os-core-update,tesseract --no-boot-update
+
+# For some Host OS configuration with redirect_dir on,
+# extra data are saved on the upper layer when the same
+# file exists on different layers. To minimize docker
+# image size, remove the overlapped files before copy.
+RUN mkdir /os_core_install
+COPY --from=clearlinux/os-core:latest / /os_core_install/
+RUN cd / && \
+    find os_core_install | sed -e 's/os_core_install/install_root/' | xargs rm -d &> /dev/null || true
+
+
+FROM clearlinux/os-core:latest
+
+COPY --from=builder /install_root /
+
+CMD ["tesseract"]
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+# Clear Linux* OS `tesseract-ocr` container image
+
+<!-- Required -->
+## What is this image?
+
+`clearlinux/tesseract-ocr` is a Docker image with OCR engine `libtesseract` and cmdline tool `tesseract`
+ on top of the [official clearlinux base image](https://hub.docker.com/_/clearlinux). 
+
+<!-- application introduction -->
+> [tesseract](https://github.com/tesseract-ocr/tesseract) is an open source
+> optical character recognition (OCR) platform. OCR extracts text from images and
+> documents without a text layer and outputs the document into a new searchable text file,
+> PDF, or most other popular formats. 
+
+For other Clear Linux* OS
+based container images, see: https://hub.docker.com/u/clearlinux
+
+## Why use a clearlinux based image?
+
+<!-- CL introduction -->
+> [Clear Linux* OS](https://clearlinux.org/) is an open source, rolling release
+> Linux distribution optimized for performance and security, from the Cloud to
+> the Edge, designed for customization, and manageability.
+
+Clear Linux* OS based container images use:
+* Optimized libraries that are compiled with latest compiler versions and
+  flags.
+* Software packages that follow upstream source closely and update frequently.
+* An aggressive security model and best practices for CVE patching.
+* A multi-staged build approach to keep a reduced container image size.
+* The same container syntax as the official images to make getting started
+  easy. 
+
+To learn more about Clear Linux* OS, visit: https://clearlinux.org.
+
+<!-- Required -->
+## Deployment:
+
+### Deploy with Docker
+The easiest way to get started with this image is by simply pulling it from
+Docker Hub. 
+
+1. Pull the image from Docker Hub: 
+    ```
+    docker pull clearlinux/tesseract-ocr
+    ```
+
+2. Start a container using the examples below
+    ```
+    docker run --rm -it --name myapp -v "$PWD":/app -w /app clearlinux/tesseract-ocr tesseract xxx.tiff stdout --oem 1
+    ```
+    or if trained data for language is in $PWD,
+    ```
+    docker run --rm -it --name myapp -e "TESSDATA_PREFIX=/app" -v "$PWD":/app -w /app clearlinux/tesseract-ocr tesseract xxx.tiff stdout --oem 1
+    ``` 
+<!-- Optional -->
+### Deploy with Kubernetes
+
+<!-- Required -->
+## Build and modify:
+
+The Dockerfiles for all Clear Linux* OS based container images are available at
+https://github.com/clearlinux/dockerfiles. These can be used to build and
+modify the container images.
+
+1. Clone the clearlinux/dockerfiles repository.
+    ```
+    git clone https://github.com/clearlinux/dockerfiles.git
+    ```
+2. Change to the directory of the application:
+    ```
+    cd tesseract-ocr/
+    ```
+
+3. Build the container image:
+    ```
+    docker build -t clearlinux/tesseract-ocr .
+    ```
+
+4. Please refer to [create custom application container image](https://docs.01.org/clearlinux/latest/guides/maintenance/container-image-modify.html) on how to customize your container image with specific debug capabilities, such as: make, git.
+
+   Refer to the Docker documentation for [default build arguments](https://docs.docker.com/engine/reference/builder/#arg).
+   Additionally:
+   
+   - `swupd_args` - specifies arguments to pass to the Clear Linux* OS software
+     manager. See the [swupd man pages](https://github.com/clearlinux/swupd-client/blob/master/docs/swupd.1.rst#options)
+     for more information.
+
+## note:
+  > The container doesn't include any trained data for language, you need download specific language file from
+  > https://github.com/tesseract-ocr/tessdata and copy to /usr/share/tessdata, e.g to support English, you need copy eng.traineddata。
+<!-- Required -->
+## Licenses
+
+All licenses for the Clear Linux* Project and distributed software can be found
+at https://clearlinux.org/terms-and-policies
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+#!/bin/bash
+. ../docker-hooks.sh
+
+image="clearlinux/tesseract-ocr"
+package=tesseract
+
+do_tag $image $package