drobne

.env.example

@@ -1,6 +1,9 @@
 # === Podstawowe ===
 APP_PORT=8080
 
+# healthcheck na potrzeby dockera
+HEALTHCHECK_TOKEN=Bu22SW455TPe92
+
 # SQLAlchemy URI bazy (np. SQLite, Postgres, MySQL).
 # Przykłady:
 #  - SQLite w katalogu instance: sqlite:///instance/baza.db

Dockerfile

@@ -1,9 +1,15 @@
 FROM python:3.13-slim
 WORKDIR /app
 
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    && apt-get install -y build-essential \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
 COPY requirements.txt requirements.txt
-RUN apt-get update && apt-get install -y build-essential && \
-    pip install --upgrade pip && pip install -r requirements.txt
+
+RUN pip install --upgrade pip
+RUN pip install --no-cache-dir -r requirements.txt
 
 COPY . .
 RUN mkdir -p /app/instance

app.py

@@ -595,6 +595,16 @@ def favicon():
     return "", 204
 
 
+@app.route("/healthcheck")
+def healthcheck():
+    header_token = request.headers.get("X-Internal-Check")
+    correct_token = app.config.get("HEALTHCHECK_TOKEN")
+
+    if header_token != correct_token:
+        abort(404)
+    return "OK", 200
+
+
 if __name__ == "__main__":
     with app.app_context():
         db.create_all()

config.py

@@ -47,3 +47,5 @@ class Config:
 
     # (opcjonalnie) wyłącz warningi track_modifications
     SQLALCHEMY_TRACK_MODIFICATIONS = False
+
+    HEALTHCHECK_TOKEN = _get_str("HEALTHCHECK_TOKEN", "healthcheck")

docker-compose.yml

@@ -3,10 +3,17 @@ version: '3.8'
 services:
   app:
     build: 
+      container_name: zbiorka-app
       context: .
       dockerfile: Dockerfile
     ports:
       - "${APP_PORT:-8080}:${APP_PORT:-8080}"
+    healthcheck:
+      test: ["CMD", "python", "-c", "import urllib.request; import sys; req = urllib.request.Request('http://localhost:8000/healthcheck', headers={'X-Internal-Check': '${HEALTHCHECK_TOKEN}'}); sys.exit(0) if urllib.request.urlopen(req).read() == b'OK' else sys.exit(1)"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
     volumes:
       - ./instance:/app/instance
     restart: unless-stopped