Added more assignments

Author: kchandan

flask-image/Dockerfile

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+# syntax=docker/dockerfile:1
+FROM ubuntu:22.04
+
+# install app dependencies
+RUN apt-get update && apt-get install -y python3 python3-pip
+RUN pip install flask==3.0.*
+
+# install app
+COPY hello.py /
+
+# final configuration
+ENV FLASK_APP=hello
+EXPOSE 8000
+CMD ["flask", "run", "--host", "0.0.0.0", "--port", "8000"]

flask-image/README.md

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+from flask import Flask
+app = Flask(__name__)
+
+@app.route("/")
+def hello():
+    return "Hello World!"

flask-image/hello.py

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+FROM python:3.10-slim
+
+WORKDIR /app
+COPY . /app
+RUN pip install -r requirements.txt
+
+CMD ["python", "app.py"]

hello-world-compose/backend/Dockerfile

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+from flask import Flask
+
+app = Flask(__name__)
+
+@app.route("/")
+def hello():
+    return "Hello, World! From the Python Backend."
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=8000)

hello-world-compose/backend/app.py

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+flask

hello-world-compose/backend/requirements.txt

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+services:
+  backend:
+    build:
+      context: ./backend
+    container_name: python-backend
+    ports:
+      - "8000:8000"
+
+  nginx:
+    image: nginx:latest
+    container_name: nginx-proxy
+    ports:
+      - "8080:80"
+    volumes:
+      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf:ro
+    depends_on:
+      - backend

hello-world-compose/docker-compose.yml

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+server {
+    listen 80;
+
+    location / {
+        proxy_pass http://backend:5000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+    }
+}

hello-world-compose/nginx/default.conf

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+# syntax=docker/dockerfile:1
+FROM ubuntu AS base
+RUN echo "base"
+
+FROM base AS stage1
+RUN echo "stage1"
+
+FROM base AS stage2
+RUN echo "stage2"