Cant install postgres on docker with ruby/sinatra - ruby

Question

I am trying to make a tesseract api using docker, but when at the point of bundle install i get this error:
Fetching data_mapper 1.2.0
Installing data_mapper 1.2.0
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory:
/var/lib/gems/2.3.0/gems/do_postgres-0.10.17/ext/do_postgres
/usr/bin/ruby2.3 -r ./siteconf20171013-5-6l2bdy.rb extconf.rb
checking for main() in -lpq... yes
checking for libpq-fe.h... yes
checking for libpq/libpq-fs.h... yes
checking for postgres.h... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/usr/bin/$(RUBY_BASE_NAME)2.3
--with-pgsql-server-dir
--without-pgsql-server-dir
--with-pgsql-server-include
--without-pgsql-server-include=${pgsql-server-dir}/include
--with-pgsql-server-lib
--without-pgsql-server-lib=${pgsql-server-dir}/lib
--with-pgsql-client-dir
--without-pgsql-client-dir
--with-pgsql-client-include
--without-pgsql-client-include=${pgsql-client-dir}/include
--with-pgsql-client-lib
--without-pgsql-client-lib=${pgsql-client-dir}/lib
--with-pqlib
--without-pqlib
Could not find PostgreSQL build environment (libraries & headers): Makefile not
created
To see why this extension failed to compile, please check the mkmf.log which can
be found here:
/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/do_postgres-0.10.17/mkmf.log
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.3.0/gems/do_postgres-0.10.17
for inspection.
Results logged to
/var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/do_postgres-0.10.17/gem_make.out
An error occurred while installing do_postgres (0.10.17), and Bundler cannot
continue.
Make sure that `gem install do_postgres -v '0.10.17'` succeeds before bundling.
In Gemfile:
dm-postgres-adapter was resolved to 1.2.0, which depends on
do_postgres
The command '/bin/sh -c /bin/bash -l -c "bundle install"' returned a non-zero code: 5
My docker file looks like this:
FROM ubuntu:16.04
RUN apt-get update && apt-get install -y \
ruby-dev \
postgresql postgresql-contrib libpq-dev \
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 \
vim \
python-pip
# 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
# Install pytesseract
RUN pip install --upgrade pip \
&& pip install pytesseract==0.1.6
# Add textcleaner from Fred's ImageMagick Scripts
# http://www.fmwconcepts.com/imagemagick/textcleaner/
ADD ./bin/textcleaner /usr/local/bin
# Setup app
WORKDIR /app
ADD . /app
RUN /bin/bash -l -c "gem install pg -- --with-pg-lib=/usr/lib"
RUN /bin/bash -l -c "gem install bundler"
RUN /bin/bash -l -c "bundle install"
ENTRYPOINT ["ruby", "app.rb"]
# create user tesseract for use with this server
RUN groupadd -r tesseract && useradd -r -g tesseract tesseract
USER tesseract
I am just running a small sinatra app with a single endpoint where you send the image an it returns the text as a json file and im stumbling at this point.
I have googled around a fair amount and tried a few solutions such as pointing to where the config file is but they all seem to give a similar error.
Any help would be great

Answer 1

Why use ubuntu:16.04 at all in the first place. I think the problem is that your docker environment has not been properly setup to run ruby and bundler.
To get past this gory setup process, I suggest you use a ruby image with an alpine or slim tag if storage space is a problem. Then the setup process becomes much easier and you avoid all these errors