build: use python package (setup.py)

.gitignore

@@ -1,3 +1,6 @@
 *.pyc
 __pycache__
+*.egg
+*.egg-info
+
 venv

Dockerfile

@@ -1,10 +1,11 @@
 FROM python:3.9-alpine3.15
 
+# caching of dependencies
 COPY requirements.txt /app/
 RUN pip install -r /app/requirements.txt
 
-COPY assets /app/assets
-COPY templates /app/templates
-COPY rickroller.py server.py /app/
+COPY setup.py /app/
+COPY rickroll /app/rickroll
+RUN pip install -e /app
 
-ENTRYPOINT ["python", "/app/server.py"]
+ENTRYPOINT ["python", "-m", "rickroll"]

server.py → rickroll/__init__.py

@@ -1,8 +1,9 @@
 from flask import Flask, request, render_template
 from validators.url import url as urlvalidate
-from rickroller import RickRoller
 import urllib
 
+from .rickroller import RickRoller
+
 app = Flask(__name__, static_folder='assets')
 
 @app.route('/')
@@ -14,12 +15,4 @@ def rickroll():
 
         return RickRoller.rickroll(url)
 
-    return render_template('index.html')
-
-if __name__ == '__main__':
-    import argparse
-    parser = argparse.ArgumentParser()
-    parser.add_argument('-d', '--debug', action='store_true')
-    args = parser.parse_args()
-
-    app.run(host='0.0.0.0', port=8080, debug=args.debug)
+    return render_template('index.html')

rickroll/__main__.py

@@ -0,0 +1,9 @@
+import argparse
+from . import app
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-d', '--debug', action='store_true')
+    args = parser.parse_args()
+
+    app.run(host='0.0.0.0', port=8080, debug=args.debug)

setup.py

@@ -0,0 +1,13 @@
+from setuptools import setup, find_packages
+import os, sys
+
+HERE = os.path.dirname(os.path.realpath(__file__))
+with open(os.path.join(HERE, 'requirements.txt')) as f:
+    requirements = [line.strip() for line in f if len(line.strip()) and not line.strip().startswith('#')]
+
+setup(
+    name='rickroll',
+    packages=find_packages(),
+    include_package_data=True,
+    install_requires=requirements,
+)