infra: add opts for tox builds ran in parallel

.github/workflows/check-format.yml

@@ -26,4 +26,4 @@ jobs:
         pip install tox
     - name: Run code format checks
       run: |
-        tox -e linters_check
+        tox -e linters_check -p auto

README.md

@@ -205,6 +205,12 @@ To run linters and doc generators and unit tests:
 tox
 ```
 
+or if your machine can handle higher workloads, run them in parallel with:
+
+```bash
+tox -p auto
+```
+
 ### Integration Tests
 
 First, configure a profile to use your account to interact with AWS. To learn more, see [Configure AWS CLI](https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html).

tox.ini

@@ -1,6 +1,11 @@
 [tox]
 envlist = clean,linters,docs,unit-tests
 
+[testenv]
+parallel_show_output = true
+package = wheel
+wheel_build_env = .pkg
+
 [testenv:clean]
 deps = coverage
 skip_install = true
@@ -104,7 +109,7 @@ deps =
     sphinx-rtd-theme
     sphinxcontrib-apidoc
 commands =
-    sphinx-build -E -T -b html doc build/documentation/html
+    sphinx-build -E -T -b html doc build/documentation/html -j auto
 
 [testenv:serve-docs]
 basepython = python3