Nginx Proxy Docker Compose

Build Docker Image from Dockerfile in Docker Compose

1. Create a reverse proxy.

FROM nginx:alpine
 
COPY nginx.conf /etc/nginx/nginx.conf
RUN apk update && apk add bash

2. Create Docker Compose to run 3 docker container of Nginx

Refer to docker-compose.yaml.

Mount Nginx Config of proxy for easy updating

In the path ./reverse-proxy/nginx.conf we define proxy directive help passed to original server. But in the development process, we need change on a regular basis. Mount it to local directory will a good solution for easy for using.

Diff in Github

     ports:
       - 8080:8080
       - 8081:8081
+    volumes:
+      - ./reverse-proxy/nginx.conf:/etc/nginx/nginx.conf
     # restart: always

Nginx Proxy Caching

For any reason, we need cache between original server to reverse proxy. Nginx support config cache with expire time, limit size of cache...

References

1. Docker Compose Nginx Reverse Proxy Multiple Containers https://www.bogotobogo.com/DevOps/Docker/Docker-Compose-Nginx-Reverse-Proxy-Multiple-Containers.php
2. Introduction to Docker Compose - https://www.baeldung.com/ops/docker-compose