fix build by disabling mujoco and moving to newer python patch versio…

…ns (openai#2220)

* reverting to older version of 3.6 python to test if the build is failing because of that

* revert 3.7 to 3.7.3 for the build

* revert python 3.8 version to 3.8.1

* do not install mujoco on 3.8 and 3.9

* enable mujoco for 3.7

* .

* .

* .

* use regex to navigate python version dependent package installation

* .

* try only one python version at a time

* switch to possibly more popular python tag for 3.6

* disable mujoco

.travis.yml

@@ -5,10 +5,10 @@ python:
 services:
   - docker
 env:
-  - PY_VER=3.6.8
-  - PY_VER=3.7.3
-  - PY_VER=3.8.6
-  - PY_VER=3.9.0
+  - PY_VER=3.6.13
+  - PY_VER=3.7.10
+  - PY_VER=3.8.9
+  - PY_VER=3.9.4
 
 install: "" # so travis doesn't do pip install requirements.txt
 script:
@@ -21,4 +21,4 @@ deploy:
     password: $TWINE_PASSWORD
     on:
         tags: true
-        condition: $PY_VER = 3.6.8
+        condition: $PY_VER = 3.8.9

py.Dockerfile

@@ -21,7 +21,8 @@ COPY . /usr/local/gym/
 WORKDIR /usr/local/gym/
 # install all extras for python 3.6 and 3.7, and skip mujoco add-ons for 3.8 and 3.9
 # as mujoco 1.50 does not seem to work with 3.8 and 3.9
-RUN bash -c "[[ $PYTHON_VER =~ 3\.[6-7]\.[0-9] ]] && pip install -e .[all] || pip install -e .[nomujoco]"
+# RUN bash -c "[[ $PYTHON_VER =~ 3\.[6-7]\.[0-9] ]] && pip install -e .[all] || pip install -e .[nomujoco]"
+RUN pip install -e .[nomujoco]
 
 ENTRYPOINT ["/usr/local/gym/bin/docker_entrypoint"]
 CMD ["pytest","--forked"]