action-pylint initial commit

Signed-off-by: Thomas Sjögren <[email protected]>

Dockerfile

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+FROM konstruktoid/alpine
+
+LABEL "com.github.actions.name"="Konstruktoid Python linting"
+LABEL "com.github.actions.description"="Python linting using black and flake8"
+LABEL "com.github.actions.icon"="mic"
+LABEL "com.github.actions.color"="purple"
+
+LABEL "repository"="https://github.com/konstruktoid/action-pylint"
+LABEL "homepage"="https://github.com/konstruktoid/action-pylint"
+LABEL "maintainer"="Thomas Sjögren <[email protected]>"
+
+COPY requirements.txt /requirements.txt
+
+RUN apk update && \
+    apk upgrade && \
+    apk --update add gcc musl-dev python3-dev python3 && \
+    pip3 install --upgrade pip && \
+    pip3 install -r /requirements.txt && \
+    apk del gcc musl-dev python3-dev && \
+    rm -rf /var/cache/apk/
+
+COPY entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

README.md

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+= Python linting and testing using black and flake8
+
+A GitHub action that checks Python code using [black](https://github.com/psf/black)
+and [flake8](https://gitlab.com/pycqa/flake8).
+
+== Tools installed
+
+```
+black
+flake8
+flake8-bandit
+flake8-bugbear
+flake8-deprecated
+flake8-executable
+```
+
+== Github Actions configuration examples
+
+```sh
+on: [push, pull_request]
+name: Python Linting
+jobs:
+  PythonLinting:
+    name: Python linting
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Konstruktoid Python linting
+        uses: konstruktoid/action-pylint@master
+```
+
+```
+workflow "Python Linting" {
+  on = "push"
+  resolves = ["python-linting"]
+}
+
+action "python-linting" {
+  uses = "konstruktoid/action-pylint@master"
+}
+```
+
+== Script
+
+```sh
+#!/bin/sh -l
+
+black --quiet --check .
+flake8 .
+```

entrypoint.sh

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+#!/bin/sh -l
+
+black --quiet --check .
+flake8 .

requirements.txt

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+black
+flake8
+flake8-bandit
+flake8-bugbear
+flake8-deprecated
+flake8-executable