`docker build .` doesn't work

When I executed docker build on local development environment, this command didn't work because of not installing lxml's build dependencies for building.

Therefore, I modified Dockerfile to fix this problem.

Local development environment

$ docker -v
Docker version 19.03.5, build 633a0ea

$ sw_vers
ProductName:    Mac OS X
ProductVersion: 10.15.2
BuildVersion:   19C57

$ system_profiler SPHardwareDataType
    ...
    Hardware Overview:
      Model Name: MacBook Pro
      Model Identifier: MacBookPro16,1
      Processor Name: 8-Core Intel Core i9
      Processor Speed: 2.3 GHz
      Number of Processors: 1
      Total Number of Cores: 8
    ...

Error messages

I executed below:

$ git clone https://github.com/taspinar/twitterscraper.git
$ cd twitterscraper
$ docker build -t twitterscraper .

output

Sending build context to Docker daemon   1.46MB
Step 1/5 : FROM python:3.7-alpine
 ---> 8922d588eec6
Step 2/5 : COPY . /app
 ---> ef1950c03f7e
Step 3/5 : WORKDIR /app
 ---> Running in d583ab62c619
Removing intermediate container d583ab62c619
 ---> 21db47ea1ead
Step 4/5 : RUN python setup.py install
 ---> Running in bb84ce370b50
running install
running bdist_egg
running egg_info
creating twitterscraper.egg-info
writing twitterscraper.egg-info/PKG-INFO
writing dependency_links to twitterscraper.egg-info/dependency_links.txt
writing entry points to twitterscraper.egg-info/entry_points.txt
writing requirements to twitterscraper.egg-info/requires.txt
writing top-level names to twitterscraper.egg-info/top_level.txt
writing manifest file 'twitterscraper.egg-info/SOURCES.txt'
reading manifest file 'twitterscraper.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no files found matching 'LICENSE.txt'
warning: no files found matching 'HISTORY.rst'
writing manifest file 'twitterscraper.egg-info/SOURCES.txt'
installing library code to build/bdist.linux-x86_64/egg
running install_lib
running build_py
creating build
creating build/lib
creating build/lib/twitterscraper
copying twitterscraper/user.py -> build/lib/twitterscraper
copying twitterscraper/tweet.py -> build/lib/twitterscraper
copying twitterscraper/query.py -> build/lib/twitterscraper
copying twitterscraper/__init__.py -> build/lib/twitterscraper
copying twitterscraper/ts_logger.py -> build/lib/twitterscraper
copying twitterscraper/main.py -> build/lib/twitterscraper
creating build/bdist.linux-x86_64
creating build/bdist.linux-x86_64/egg
creating build/bdist.linux-x86_64/egg/twitterscraper
copying build/lib/twitterscraper/user.py -> build/bdist.linux-x86_64/egg/twitterscraper
copying build/lib/twitterscraper/tweet.py -> build/bdist.linux-x86_64/egg/twitterscraper
copying build/lib/twitterscraper/query.py -> build/bdist.linux-x86_64/egg/twitterscraper
copying build/lib/twitterscraper/__init__.py -> build/bdist.linux-x86_64/egg/twitterscraper
copying build/lib/twitterscraper/ts_logger.py -> build/bdist.linux-x86_64/egg/twitterscraper
copying build/lib/twitterscraper/main.py -> build/bdist.linux-x86_64/egg/twitterscraper
byte-compiling build/bdist.linux-x86_64/egg/twitterscraper/user.py to user.cpython-37.pyc
byte-compiling build/bdist.linux-x86_64/egg/twitterscraper/tweet.py to tweet.cpython-37.pyc
byte-compiling build/bdist.linux-x86_64/egg/twitterscraper/query.py to query.cpython-37.pyc
byte-compiling build/bdist.linux-x86_64/egg/twitterscraper/__init__.py to __init__.cpython-37.pyc
byte-compiling build/bdist.linux-x86_64/egg/twitterscraper/ts_logger.py to ts_logger.cpython-37.pyc
byte-compiling build/bdist.linux-x86_64/egg/twitterscraper/main.py to main.cpython-37.pyc
creating build/bdist.linux-x86_64/egg/EGG-INFO
copying twitterscraper.egg-info/PKG-INFO -> build/bdist.linux-x86_64/egg/EGG-INFO
copying twitterscraper.egg-info/SOURCES.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
copying twitterscraper.egg-info/dependency_links.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
copying twitterscraper.egg-info/entry_points.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
copying twitterscraper.egg-info/requires.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
zip_safe flag not set; analyzing archive contents...
copying twitterscraper.egg-info/top_level.txt -> build/bdist.linux-x86_64/egg/EGG-INFO
creating dist
creating 'dist/twitterscraper-1.4.0-py3.7.egg' and adding 'build/bdist.linux-x86_64/egg' to it
removing 'build/bdist.linux-x86_64/egg' (and everything under it)
Processing twitterscraper-1.4.0-py3.7.egg
Copying twitterscraper-1.4.0-py3.7.egg to /usr/local/lib/python3.7/site-packages
Adding twitterscraper 1.4.0 to easy-install.pth file
Installing twitterscraper script to /usr/local/bin

Installed /usr/local/lib/python3.7/site-packages/twitterscraper-1.4.0-py3.7.egg
Processing dependencies for twitterscraper==1.4.0
Searching for billiard
Reading https://pypi.org/simple/billiard/
Downloading https://files.pythonhosted.org/packages/9a/bb/2a016ac912fca48e06ff5a662407f3d1681aa47df97fb19feba7cc931ee1/billiard-3.6.1.0-py3-none-any.whl#sha256=01afcb4e7c4fd6480940cfbd4d9edc19d7a7509d6ada533984d0d0f49901ec82
Best match: billiard 3.6.1.0
Processing billiard-3.6.1.0-py3-none-any.whl
Installing billiard-3.6.1.0-py3-none-any.whl to /usr/local/lib/python3.7/site-packages
Adding billiard 3.6.1.0 to easy-install.pth file

Installed /usr/local/lib/python3.7/site-packages/billiard-3.6.1.0-py3.7.egg
Searching for requests
Reading https://pypi.org/simple/requests/
Downloading https://files.pythonhosted.org/packages/51/bd/23c926cd341ea6b7dd0b2a00aba99ae0f828be89d72b2190f27c11d4b7fb/requests-2.22.0-py2.py3-none-any.whl#sha256=9cf5292fcd0f598c671cfc1e0d7d1a7f13bb8085e9a590f48c010551dc6c4b31
Best match: requests 2.22.0
Processing requests-2.22.0-py2.py3-none-any.whl
Installing requests-2.22.0-py2.py3-none-any.whl to /usr/local/lib/python3.7/site-packages
writing requirements to /usr/local/lib/python3.7/site-packages/requests-2.22.0-py3.7.egg/EGG-INFO/requires.txt
Adding requests 2.22.0 to easy-install.pth file

Installed /usr/local/lib/python3.7/site-packages/requests-2.22.0-py3.7.egg
Searching for lxml
Reading https://pypi.org/simple/lxml/
Downloading https://files.pythonhosted.org/packages/e4/19/8dfeef50623892577dc05245093e090bb2bab4c8aed5cad5b03208959563/lxml-4.4.2.tar.gz#sha256=eff69ddbf3ad86375c344339371168640951c302450c5d3e9936e98d6459db06
Best match: lxml 4.4.2
Processing lxml-4.4.2.tar.gz
Writing /tmp/easy_install-fr1khd80/lxml-4.4.2/setup.cfg
Running lxml-4.4.2/setup.py -q bdist_egg --dist-dir /tmp/easy_install-fr1khd80/lxml-4.4.2/egg-dist-tmp-orkblx88
warning: no files found matching '*.html' under directory 'doc'
Building lxml version 4.4.2.
Building without Cython.
ERROR: b'/bin/sh: xslt-config: not found\n'
** make sure the development packages of libxml2 and libxslt are installed **

Using build configuration of libxslt
Compile failed: command 'gcc' failed with exit status 1
*********************************************************************************
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
*********************************************************************************
error: Setup script exited with error: command 'gcc' failed with exit status 1
The command '/bin/sh -c python setup.py install' returned a non-zero code: 1

How to fix it

Accoding to error messages, building lxml failed because lxml needs build dependencies: libxml2, libxslt.

After I modified Dockerfile like below, building image is successfully completed.

FROM python:3.7-alpine
COPY . /app
WORKDIR /app
+
+ RUN apk add --no-cache \
+     gcc \
+     libc-dev \
+     libxml2-dev \
+     libxslt-dev
RUN python setup.py install
CMD ["twitterscraper"]

CAUTION: It takes 2.5 minutes to build the image based on edited Dockerfile.

$ time docker build -t twitterscraper .
docker build -t twitterscraper .  0.09s user 0.06s system 0% cpu 2:31.43 total

I'll make a pull request to fix this issue.

Fixed It as in this pull request