feat(app): Initialize flask app

.dockerignore

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+.git/
+.github/
+.idea/
+.venv/
+shell.nix
+README.md

Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+COPY . .
+
+RUN pip install --no-cache-dir -r dependencies.txt
+
+ENV FLASK_ENV=production
+ENV PYTHONUNBUFFERED=1
+
+CMD ["gunicorn", "app:app", "-b", "0.0.0.0:80", "--workers", "1"]

app.py

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+from flask import Flask, render_template
+import os
+
+app = Flask(__name__)

dependencies.txt

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+flask==3.1.2
+loguru
+gunicorn

shell.nix

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+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    python3
+    ruff
+    pyright
+  ];
+
+  shellHook = ''
+    if [ ! -d ".venv" ]; then
+      python -m venv .venv
+    fi
+
+    source .venv/bin/activate
+
+    if [ -f "requirements-dev.txt" ]; then
+      pip install -r requirements-dev.txt
+    fi
+
+    if [ -f "dependencies.txt" ]; then
+      pip install -r dependencies.txt
+    fi
+  '';
+}