attempted fix

Author: Sceki

setup.py

@@ -31,7 +31,7 @@ def read_package_variable(key):
     # author_email='',
     packages=find_packages(),
     install_requires=['pyprob', 'numpy', 'matplotlib', 'torch>=1.5.1', 'dsgp4', 'skyfield>=1.26', 'pandas'],
-    extras_require={'dev': ['pytest', 'coverage', 'pytest-xdist', 'docker', 'sgp4>=2.20']},
+    extras_require={'dev': ['pytest', 'coverage', 'pytest-xdist']},
     # url='https://github.com/kessler/kessler',
     classifiers=['License :: OSI Approved :: BSD License', 'Programming Language :: Python :: 3'],
     license='BSD'