I'm confused by how I should manage reverse proxy (nginx) with multiple independent webapps on the same host. I know that i can use https://github.com/jwilder/nginx-proxy and configure VIRTUAL_HOST per app but then I wont be able to have nginx visible as a service in every app docker-compose.yml.
I want to do it this way because I want to clearly define all services needed to run app in production and replicate it easy in development.
In other words: I have two webapps that I need to run on the same host and I want to define nginx as a service dependency in docker-compose.yml in both apps but share that service with both as only one nginx can forward port 80.
Dockerfile:
FROM ubuntu:14.04
MAINTAINER Test ([email protected])
# install nginx
RUN apt-get update -y
RUN apt-get install -y python-software-properties
RUN apt-get install -y software-properties-common
RUN add-apt-repository -y ppa:nginx/stable
RUN apt-get update -y
RUN apt-get install -y nginx
# deamon mode off
RUN echo "\ndaemon off;" >> /etc/nginx/nginx.conf
RUN chown -R www-data:www-data /var/lib/nginx
# volume
VOLUME ["/etc/nginx/sites-enabled", "/etc/nginx/certs", "/var/log/nginx"]
# expose ports
EXPOSE 80 443
# add nginx conf
ADD nginx.conf /etc/nginx/conf.d/default.conf
WORKDIR /etc/nginx
CMD ["nginx"]
nginx.conf:
server {
listen 80;
server_name test1.com www.test1.com;
location / {
proxy_pass http://web1:81/;
}
}
server {
listen 80;
server_name test2.com www.test2.com;
location / {
proxy_pass http://web1:82/;
}
}
** where web1 and web2 - container names
docker-compose.yml:
version: "2"
services:
web1:
image: your_image
container_name: web1
ports:
- 81:80
web2:
image: your_image
container_name: web2
ports:
- 82:80
nginx:
build: .
container_name: nginx
ports:
- 80:80
- 443:443
links:
- web1
- web2
How to run:
docker-compose up -d
When you call test1.com - nginx forwards your request to container web1:81, when test2.com - to container web2:82
P.S.: your question was about NGINX-reverse-proxy. But better and easier do this with TRAEFIK https://traefik.io