Im trying to use pyzbar 0.1.4 on a Flask Server in Docker
The image was created by us, based in python 2.7 taken from alpine.
Install ZBar by
apk update
apk add zbar
Im getting the following error when running dockerfile
File "/usr/lib/python2.7/site-packages/pyzbar/pyzbar.py", line 8, in <module>
from .wrapper import (
File "/usr/lib/python2.7/site-packages/pyzbar/wrapper.py", line 166, in <module>
c_uint_p, # minor
File "/usr/lib/python2.7/site-packages/pyzbar/wrapper.py", line 159, in zbar_function
return prototype((fname, load_libzbar()))
File "/usr/lib/python2.7/site-packages/pyzbar/wrapper.py", line 135, in load_libzbar
raise ImportError('Unable to find zbar shared library')
ImportError: Unable to find zbar shared library
Im trying to decode a QR image using that library
Dockerfile
FROM buffetcontainerimages.azurecr.io/base/buffetcloud-python:0.1
RUN pip install --upgrade pip setuptools wheel
COPY wheeldir /opt/app/wheeldir
COPY *requirements.txt /opt/app/src/
RUN pip install --use-wheel --no-index --find-links=/opt/app/wheeldir \
-r /opt/app/src/requirements.txt
RUN pip install --use-wheel --no-index --find-links=/opt/app/wheeldir \
-r /opt/app/src/test-requirements.txt
COPY . /opt/app/src/
WORKDIR /opt/app/src
RUN python setup.py install
EXPOSE 5000
CMD dronedemo
And requirements.txt
requests>=2.18.4
flask>=0.12.2
mechanize>=0.3.6
regex>=2.4.136
PyPDF2>=1.26.0
bs4>=4.5.3
pyzbar>=0.1.4
openpyxl>=2.5.0
selenium>=3.9.0
matplotlib>=2.1.2
When pip install zbar
pip install zbar
Collecting zbar
Downloading zbar-0.10.tar.bz2
...
zbarmodule.h:26:18: fatal error: zbar.h: No such file or directory
#include <zbar.h>
compilation terminated.
error: command 'gcc' failed with exit status 1
A simple test, looks good.
FROM python:2.7
RUN apt-get update && \
apt-get install -y build-essential libzbar-dev && \
pip install zbar
i tried alpine.. but the zbar lib is only available in the edge branch -- trying to get it to work was more trouble than it was worth.
PS. beware of images that are not in the docker repo. -- didnt know it was your image
Working example:
$ docker build -t yourimagenamehere .
Sending build context to Docker daemon 2.048kB
Step 1/2 : FROM python:2.7
---> 9e92c8430ba0
... trunc...
Successfully built d951cd32ea74
Successfully tagged yourimagenamehere:latest
$ docker run -it --rm yourimagenamehere
Python 2.7.14 (default, Dec 12 2017, 16:55:09)
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import zbar
>>>