feat: Update py38 base image and other updates

- Update pip to 20.2.3
- Update pre-commit to 2.7.1
- Update tox to 3.20.0
- Update virtualenv to 20.0.31

Author: playpauseandstop

CHANGELOG.md

@@ -1,3 +1,13 @@
+# 3.6.0 (2020-09-25)
+
+- Update `py38` image to Python 3.8.6
+- Update `py37` image to Python 3.7.9
+- Update `py36` image to Python 3.6.12
+- Update pip to 20.2.3
+- Update pre-commit to 2.7.1
+- Update tox to 3.20.0
+- Update virtualenv to 20.0.31
+
 # 3.5.0 (2020-07-23)
 
 - Update `py38` image to Python 3.8.5

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.8.5-slim-buster
+FROM python:3.8.6-slim-buster
 
 LABEL maintainer="Igor Davydenko <iam@igordavydenko.com>"
 LABEL description="Add poetry, pre-commit, and other dev-tools to official Python slim Docker image."
@@ -10,7 +10,7 @@ RUN apt update -qq \
 
 ENV PATH="/root/.local/bin:/root/.poetry/bin:${PATH}"
 
-RUN pip install pip==20.1.1 pre-commit==2.6.0 tox==3.18.0 virtualenv==20.0.27
+RUN pip install pip==20.2.3 pre-commit==2.7.1 tox==3.20.0 virtualenv==20.0.31
 
 ENV POETRY_VERSION=1.0.10
 RUN curl -sSL https://raw.githubusercontent.com/sdispater/poetry/master/get-poetry.py | python

README.md

@@ -9,16 +9,16 @@ image.
 ## Usage
 
 ```dockerfile
-FROM playpauseandstop/docker-python:3.5.0
+FROM playpauseandstop/docker-python:3.6.0
 ```
 
 ### Included dev-tools
 
-- [pip](https://pip.pypa.io) 20.1.1
+- [pip](https://pip.pypa.io) 20.2.3
 - [poetry](https://poetry.eustace.io) 1.0.10
-- [pre-commit](https://pre-commit.com) 2.6.0
-- [tox](https://tox.readthedocs.io/) 3.18.0
-- [virtualenv](https://virtualenv.pypa.io) 20.0.27
+- [pre-commit](https://pre-commit.com) 2.7.1
+- [tox](https://tox.readthedocs.io/) 3.20.0
+- [virtualenv](https://virtualenv.pypa.io) 20.0.31
 - [curl](https://curl.haxx.se) 7.64.0
 - [git](https://git-scm.com) 2.20.1
 - [locales](https://packages.debian.org/stretch/locales) &
@@ -37,6 +37,12 @@ other versions supported as well.
 
 List of supported Python versions are (`<PY_VERSION>` -> base Docker image):
 
+#### 3.6.0
+
+- `py38` -> `python:3.8.6-slim-buster`
+- `py37` -> `python:3.7.9-slim-buster`
+- `py36` -> `python:3.6.12-slim-buster`
+
 #### 3.5.0
 
 - `py38` -> `python:3.8.5-slim-buster`