Auto-generated by Trail System

Dockerfile

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+# Build stage
+FROM python:3.9-slim as build
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Runtime stage
+FROM python:3.9-slim
+WORKDIR /app
+COPY --from=build /usr/local/lib/python3.9/site-packages /usr/local/lib/python3.9/site-packages
+COPY . .
+RUN pip install --no-cache-dir gunicorn
+EXPOSE 5000
+CMD ["gunicorn", "--bind", "0.0.0.0:5000", "app:app"]

app.py

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+from flask import Flask
+
+app = Flask(__name__)
+
+@app.route('/')
+def todo_list():
+    """Route to return the Todo List page."""
+    return 'Todo List'
+
+@app.errorhandler(404)
+def page_not_found(e):
+    """Handle 404 errors."""
+    return 'Page not found', 404
+
+if __name__ == '__main__':
+    app.run(debug=False)

chart/Chart.yaml

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+apiVersion: v2
+name: todo-app
+description: A minimal Todo App built with Python Flask, containerized with Docker, and prepared for Kubernetes deployment via Helm. The application serves a simple 'Todo List' message at the root endpoint.
+type: application
+version: 0.1.0
+appVersion: "1.0.0"

chart/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: todo-app
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: todo-app
+  template:
+    metadata:
+      labels:
+        app: todo-app
+    spec:
+      containers:
+      - name: todo-app
+        image: {{ .Values.image.repository }}:{{ .Values.image.tag }}
+        ports:
+        - containerPort: 5000
+        env:
+        - name: FLASK_APP
+          value: "app.py"
+        - name: FLASK_DEBUG
+          value: "false"

chart/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: todo-app-service
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: {{ .Values.service.port }}
+  selector:
+    app: todo-app

chart/values.yaml

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+image:
+  repository: todo-app
+  tag: latest
+service:
+  port: 5000
+  type: ClusterIP