chore: Use pre-commit framework (#604)

* Add pre-commit, prettier configs and editorconfig

* Remove `check-toml` hook

* Add isort config

* Add codespell config

* Update hooks

* Remove prettierignore

* Add shellcheck config

* Add lint workflow

* Add pre-commit autoupdate workflow

* Remove path constraints from lint workflow

* Fix CI

* Add guide to CONTRIBUTING.md

* Fix (probably) shfmt

* Fix (probably) shfmt

* Fix (probably) shfmt

.editorconfig

@@ -0,0 +1,19 @@
+# http://editorconfig.org
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.{py, pyi}]
+indent_size = 4
+
+[*Dockerfile*]
+indent_size = 4
+
+[*.md]
+trim_trailing_whitespace = false

.github/workflows/lint.yml

@@ -4,19 +4,38 @@ on:
   push:
     branches:
       - main
-    paths:
-      - "*.sh"
   pull_request:
     branches:
       - main
-    paths:
-      - "*.sh"
 
 jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout
-      - uses: ludeeus/action-shellcheck@1.1.0
+        uses: actions/checkout@v2
+
+      - name: Setup Python
+        uses: actions/setup-python@v2
+
+      # For shfmt pre-commit hook
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: "^1.14"
+
+      - name: Cache
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cache/pre-commit
+            ~/.cache/pip
+          key: lint-${{ hashFiles('.pre-commit-config.yaml') }}
+
+      - name: Install pre-commit
+        run: pip install -U pre-commit
+
+      - name: Lint
+        run: pre-commit run --color=always --all-files
         env:
-          SHELLCHECK_OPTS: -x
+          GO111MODULE: on

.github/workflows/pre-commit-autoupdate.yml

@@ -0,0 +1,26 @@
+name: Autoupdate pre-commit hooks
+
+on:
+  schedule:
+    # Every day at 7 am
+    - cron: 0 7 * * *
+
+jobs:
+  pre-commit-autoupdate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Update pre-commit hooks
+        uses: vrslev/pre-commit-autoupdate@v1.0.0
+
+      - name: Create Pull Request
+        uses: peter-evans/create-pull-request@v3
+        with:
+          branch: pre-commit-autoupdate
+          title: "chore(deps): Update pre-commit hooks"
+          commit-message: "chore(deps): Update pre-commit hooks"
+          body: Update pre-commit hooks
+          labels: dependencies,development
+          delete-branch: True

.pre-commit-config.yaml

@@ -0,0 +1,56 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.0.1
+    hooks:
+      - id: trailing-whitespace
+      - id: end-of-file-fixer
+
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v2.29.1
+    hooks:
+      - id: pyupgrade
+        args: [--py37-plus]
+
+  - repo: https://github.com/psf/black
+    rev: 21.11b1
+    hooks:
+      - id: black
+
+  - repo: https://github.com/pycqa/isort
+    rev: 5.10.1
+    hooks:
+      - id: isort
+        args: [
+            -o, # KNOWN_THIRD_PARTY
+            frappe,
+            --profile,
+            black,
+          ]
+
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v2.5.1
+    hooks:
+      - id: prettier
+        exclude: installation/docker-compose-custom.yml
+
+  - repo: https://github.com/codespell-project/codespell
+    rev: v2.1.0
+    hooks:
+      - id: codespell
+        exclude: ".*Dockerfile.*"
+
+  - repo: local
+    hooks:
+      - id: shfmt
+        name: shfmt
+        language: golang
+        additional_dependencies: [mvdan.cc/sh/v3/cmd/shfmt]
+        entry: shfmt
+        args: [-w]
+        types: [shell]
+
+  - repo: https://github.com/shellcheck-py/shellcheck-py
+    rev: v0.8.0.1
+    hooks:
+      - id: shellcheck
+        args: [-x]

CONTRIBUTING.md

@@ -10,12 +10,35 @@ On each PR that contains changes relevant to Docker builds, images are being bui
 > :evergreen_tree: Please be considerate when pushing commits and opening PR for multiple branches, as the process of building images uses energy and contributes to global warming.
 > 
 
+
 ## Lint
 
+We use `pre-commit` framework to lint the codebase before committing.
+First, you need to install pre-commit with pip:
+
 ```shell
-shellcheck example.sh
+pip install pre-commit
 ```
 
+Also you can use brew if you're on Mac:
+
+```shell
+brew install pre-commit
+```
+
+To setup _pre-commit_ hook, run:
+
+```shell
+pre-commit install
+```
+
+To run all the files in repository, run:
+
+```shell
+pre-commit run --all-files
+```
+
+
 ## Build
 
 ```shell