No need to run pip install pyScss in setup.py if it's not available

platypush/platydock/__init__.py

@@ -90,11 +90,12 @@ def generate_dockerfile(deps, ports, cfgfile, devdir, python_version):
     for dep in deps:
         content += '\t&& pip install {} \\\n'.format(dep)
 
-    content += '\t&& pip install ' + \
-               'git+https://github.com/BlackLight/platypush.git \\\n'
+    content += textwrap.dedent(
+        '''
+        RUN pip install git+https://github.com/BlackLight/platypush.git
+        RUN apk del git && apk del build-base
 
-    content += '\t&& apk del git \\\n'
-    content += '\t&& apk del build-base\n\n'
+        ''')
 
     for port in ports:
         content += 'EXPOSE {}\n'.format(port)

setup.py

@@ -3,8 +3,6 @@
 import errno
 import os
 import re
-import subprocess
-import sys
 import distutils.cmd
 from distutils.command.build import build
 from setuptools import setup, find_packages
@@ -23,15 +21,9 @@ class WebBuildCommand(distutils.cmd.Command):
         try:
             from scss import Compiler
         except ImportError:
-            print('pyScss not found, trying to install it')
-            cmd = [sys.executable, '-m', 'pip', 'install', 'pyScss']
-
-            try:
-                subprocess.call(cmd)
-            except Exception as e:
-                print(('pyScss install command failed: {}: {}. You will have to generate ' +
-                    'the CSS files manually through python setup.py build install').format(' '.join(cmd), str(e)))
-                return
+            print('pyScss module not found: {}. You will have to generate ' +
+                  'the CSS files manually through python setup.py build install')
+            return
 
         print('Building CSS files')
         base_path = path(os.path.join('platypush','backend','http','static','css'))