Remove deprecated pytest stuff for newer Python

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.7.6-buster
+FROM python:3.12
 
 RUN mkdir /pytest_project/
 COPY ./test-requirements.txt /pytest_project/

docker-compose.yaml

@@ -1,4 +1,3 @@
-version: '3.1'
 services:
   test:
     build: .

pytest.ini

@@ -2,10 +2,7 @@
 description-file = README.md
 
 [pytest]
-python_paths = scripts
 testpaths = tests
-addopts = --pep8 --flakes --verbose --durations=10 --color=yes
-pep8maxlinelength=100
+addopts = --flakes --verbose --durations=10 --color=yes
 markers =
-    pep8: pep8 style check
     flakes: pyflakes style check

test-requirements.txt

@@ -1,7 +1,8 @@
-coverage==4.5.2
-pytest==5.2.0
-pytest-cov==2.6.1
-pytest-flakes==2.0.0
-pytest-pep8
+coverage
+pytest
+pytest-cov
+pytest-flakes
+# pytest-pep8
+pytest-pycodestyle
 pytest-pythonpath
 docker