.pre-commit-config.yaml

 ---
 repos:
-  - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.4.0
+  - repo: https://github.com/pre-commit/pre-commit-hooks.git
+    rev: v4.0.1
     hooks:
+      - id: check-added-large-files
       - id: check-executables-have-shebangs
+      - id: check-json
       - id: check-merge-conflict
-      - id: check-toml
-        files: Pipfile
+      - id: check-shebang-scripts-are-executable
+      - id: check-symlinks
+      - id: check-yaml
+      - id: detect-private-key
+      - id: end-of-file-fixer
       - id: trailing-whitespace
+        exclude: \.diff$
 
-  - repo: https://github.com/Yelp/detect-secrets
-    rev: v0.14.3
+  - repo: https://github.com/codespell-project/codespell.git
+    rev: v2.1.0
     hooks:
-      - id: detect-secrets
+      - id: codespell
 
-  - repo: https://github.com/adrienverge/yamllint
-    rev: v1.25.0
+  - repo: https://github.com/Yelp/detect-secrets.git
+    rev: v1.1.0
     hooks:
-      - id: yamllint
+      - id: detect-secrets
 
-  - repo: https://github.com/amperser/proselint/
+  - repo: https://github.com/amperser/proselint.git
     rev: 0.10.2
     hooks:
       - id: proselint
         types: [plain-text]
         exclude: LICENSE
 
-  - repo: https://github.com/ambv/black
-    rev: 20.8b1
+  - repo: https://gitlab.com/devopshq/gitlab-ci-linter.git
+    rev: v1.0.2
+    hooks:
+      - id: gitlab-ci-linter
+        args:
+          - "--server"
+          - https://git.shore.co.il
+
+  - repo: https://git.shore.co.il/nimrod/yamltool.git
+    rev: v0.1.2
+    hooks:
+      - id: yamltool
+
+  - repo: https://github.com/adrienverge/yamllint.git
+    rev: v1.26.3
+    hooks:
+      - id: yamllint
+
+  - repo: https://github.com/executablebooks/mdformat.git
+    rev: 0.7.10
+    hooks:
+      - id: mdformat
+
+  - repo: https://github.com/shellcheck-py/shellcheck-py.git
+    rev: v0.7.2.1
+    hooks:
+      - id: shellcheck
+
+  - repo: https://github.com/AleksaC/hadolint-py.git
+    rev: v2.8.0
+    hooks:
+      - id: hadolint
+
+  - repo: https://github.com/ambv/black.git
+    rev: 21.10b0
     hooks:
       - id: black
         args:
           - |
-              --line-length=79
+            --line-length=79
+
+  - repo: https://github.com/PyCQA/isort
+    rev: 5.10.1
+    hooks:
+      - id: isort
+        args: ["--filter-files", "--profile", "black"]
 
-  - repo: https://github.com/PyCQA/prospector
-    rev: 1.3.1
+  - repo: https://github.com/PyCQA/prospector.git
+    rev: 1.6.0
     hooks:
       - id: prospector
         args:
@@ -62,7 +107,7 @@ repos:
           - pyroma
 
   - repo: https://gitlab.com/pycqa/flake8.git
-    rev: 3.8.4
+    rev: 3.9.2
     hooks:
       - id: flake8
         args:
@@ -70,13 +115,3 @@ repos:
             --doctests
         additional_dependencies:
           - flake8-bugbear
-
-  - repo: https://github.com/executablebooks/mdformat.git
-    rev: 0.5.3
-    hooks:
-      - id: mdformat
-
-  - repo: https://git.shore.co.il/nimrod/docker-pre-commit.git/
-    rev: v0.3.0
-    hooks:
-      - id: hadolint

Dockerfile

 FROM registry.hub.docker.com/library/python:3.9-alpine3.14
 WORKDIR /app
 COPY requirements.txt ./
-RUN pip install -r requirements.txt
+RUN pip install -r --no-cache-dir requirements.txt
 COPY * ./
 EXPOSE 8080
 ENV FORWARDED_ALLOW_IPS "*"

app.py

@@ -3,10 +3,10 @@
 
 import json
 import os
+
 import docker
 from flask import Flask, request
 
-
 app = Flask(__name__)
 client = docker.from_env()