Question

我创建了一个docker镜像，并使用this docker文件在同一个repo中提供的脚本在此图像上安装了tesseract。然后我添加了我自己的小红宝石应用程序，以便我可以发送图像并返回结果：

SELECT 
    [FK_ID]
FROM 
    @mytable T 
GROUP BY 
    [FK_ID]
HAVING
    COUNT(DISTINCT CASE WHEN [TYPE_ID] IN (1,2,3) THEN [TYPE_ID] END) = 3
    AND COUNT(CASE WHEN [TYPE_ID] NOT IN (1,2,3) THEN [TYPE_ID] END) = 0

我的dockerfile略有改编，看起来像这样：

require_relative 'bundle/bundler/setup'
require 'sinatra'
require "json"
require 'sinatra/base'
require "sinatra/activerecord"
require 'sinatra'
require 'fileutils'
require "carrierwave"
require 'carrierwave/datamapper'
require "carrierwave/orm/activerecord"
require_relative 'models/image'
require_relative 'data_mapper_setup'

set :protection, except: [ :json_csrf ]

port = ENV['PORT'] || 8080
puts "STARTING SINATRA on port #{port}"
set :port, port
set :bind, '0.0.0.0'

CarrierWave.configure do |config|
  config.root = File.dirname(__FILE__)
end

get '/' do
  ({"Hello" => "World!"}).to_json
end

post '/extractText' do
  begin
    path = File.dirname(__FILE__)
    billID = params[:billID]
    image = Image.new(file: params[:file])
    file = File.new("#{path}#{image.file.url}")
    system("tesseract #{file} --psm 6 resultsFile.txt")
    results = File.read("resultsFile.txt")
  rescue
    status 402
    return "Error reading image"
  end
  status 200
  return resultsFile.to_json
end

使用以下设置： docker run --rm -it -v $ PWD：/ app -w / app iron / ruby：dev bundle update docker run --rm -it -v $ PWD：/ app -w / app iron / ruby：dev bundle install --standalone --clean sudo chmod -R a + rw .bundle sudo chmod -R a + rw bundle

然后运行：

    FROM ubuntu:16.04

    RUN apt-get update && apt-get install -y \
        autoconf \
        autoconf-archive \
        automake \
        build-essential \
        checkinstall \
        cmake \
        g++ \
        git \
        libcairo2-dev \
        libcairo2-dev \
        libicu-dev \
        libicu-dev \
        libjpeg8-dev \
        libjpeg8-dev \
        libpango1.0-dev \
        libpango1.0-dev \
        libpng12-dev \
        libpng12-dev \
        libtiff5-dev \
        libtiff5-dev \
        libtool \
        pkg-config \
        wget \
        xzgv \
        zlib1g-dev


    # SSH for diagnostic
    RUN apt-get update && apt-get install -y --allow-downgrades --allow-remove-essential --allow-change-held-packages openssh-server
    RUN mkdir /var/run/sshd
    RUN echo 'root:root' | chpasswd
    RUN sed -i 's/PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
    # SSH login fix. Otherwise user is kicked off after login
    RUN sed 's@session\s*required\s*pam_loginuid.so@session optional pam_loginuid.so@g' -i /etc/pam.d/sshd
    ENV NOTVISIBLE "in users profile"
    RUN echo "export VISIBLE=now" >> /etc/profile

    EXPOSE 22
    CMD ["/usr/sbin/sshd", "-D"]

    # Directories
    ENV SCRIPTS_DIR /home/scripts
    ENV PKG_DIR /home/pkg
    ENV BASE_DIR /home/workspace
    ENV LEP_REPO_URL https://github.com/DanBloomberg/leptonica.git
    ENV LEP_SRC_DIR ${BASE_DIR}/leptonica
    ENV TES_REPO_URL https://github.com/tesseract-ocr/tesseract.git
    ENV TES_SRC_DIR ${BASE_DIR}/tesseract
    ENV TESSDATA_PREFIX /usr/local/share/tessdata

    RUN mkdir ${SCRIPTS_DIR}
    RUN mkdir ${PKG_DIR}
    RUN mkdir ${BASE_DIR}
    RUN mkdir ${TESSDATA_PREFIX}

    COPY ./container-scripts/* ${SCRIPTS_DIR}/
    RUN chmod +x ${SCRIPTS_DIR}/*
    RUN ${SCRIPTS_DIR}/repos_clone.sh
    RUN ${SCRIPTS_DIR}/tessdata_download.sh

    RUN groupadd -r tesseract && useradd -r -g tesseract tesseract
    USER tesseract

    FROM iron/ruby

    WORKDIR /app

    ADD . /app
    ADD ./bin/textcleaner /usr/local/bin

    ENTRYPOINT ["ruby", "app.rb"]

这一切都运行良好但是当它到达docker run -it --rm -v $PWD:/app -w /app -p 8080:8080 iron/ruby ruby app.rb时，我在终端中得到一个输出system("tesseract #{file} --psm 6 resultsFile.txt")并且我不知道为什么。 tesseract应该安装得很好。

此外，如果我添加类似sh: tesseract: not found

的命令

我收到错误：system("docker run tesseract #{file} --psm 6 resultsFile.txt")

我确定我错过了一些简单的东西，这让我误解了docker，但我不知道为什么我不能从ruby文件中调用这些命令。

我会做的另一件事是我添加了一个脚本文件（sh: docker: not found），它有助于预处理传递的图像，但我的ruby应用程序无法在我调用ADD ./bin/textcleaner /usr/local/bin'时找到它/ p>

任何帮助都会很棒

更新以获取更多信息：

O还使用以下github链接来帮助我创建我已经提出的Dockerfile，我已经测试并且可以工作。 https://github.com/dphiggs01/docker-tesseract/blob/master/Dockerfile

调用来自ruby的命令在docker镜像中不起作用

0 个答案: