2e43a5459b
This adds SSL support for containers. It supports single host certificates, wildcards and SNI using naming conventions for certificates or optionally specify a cert name (for SNI). The SSL cipher configuration is based on mozilla intermediate profile which should provide compatibility with clients back to Firefox 1, Chrome 1, IE 7, Opera 5, Safari 1, Windows XP IE8, Android 2.3, Java 7. The configuration also enables OCSP stapling, HSTS, and ssl session caches. To enable SSL, nginx-proxy should be started w/ -p 443:443 and -v /path/to/certs:/etc/nginx/certs. Certificates must be named: <virtualhost>.crt and <virtualhost>.key where <virtualhost> matches the a value of VIRTUAL_HOST on a container. For wildcard certificates, the certificate and private key should be named after the wildcard domain with .crt and .key suffixes. For example, *.example.com should be name example.com.crt and example.com.key. For SNI where a certificate may be used for multiple domain names, the container can specify a CERT_NAME env var that corresponds to the base file name of the certificate and key. For example, if you have a cert allowing *.example.com and *.bar.com, it can be name shared.crt and shared.key. A container can use that cert by having CERT_NAME=shared and VIRTUAL_HOST=foo.example.com. The name "shared" is arbitrary and can be whatever makes sense. The behavior for the proxy when port 80 and 443 is defined is as follows: * If a container has a usable cert, port 80 will redirect to 443 for that container to always prefer HTTPS when available. * If the container does not have a usable cert 503 will be returned. In the last case, a self-signed or generic cert can be defined as "default.crt" and "default.key" which will allow a client browser to at least make a SSL connection. |
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| .dockerignore | ||
| Dockerfile | ||
| nginx.tmpl | ||
| Procfile | ||
| README.md | ||
nginx-proxy sets up a container running nginx and docker-gen. docker-gen generate reverse proxy configs for nginx and reloads nginx when containers they are started and stopped.
See Automated Nginx Reverse Proxy for Docker for why you might want to use this.
Usage
To run it:
$ docker run -d -p 80:80 -v /var/run/docker.sock:/tmp/docker.sock jwilder/nginx-proxy
Then start any containers you want proxied with an env var VIRTUAL_HOST=subdomain.youdomain.com
$ docker run -e VIRTUAL_HOST=foo.bar.com ...
Provided your DNS is setup to forward foo.bar.com to the a host running nginx-proxy, the request will be routed to a container with the VIRTUAL_HOST env var set.
Multiple Ports
If your container exposes multiple ports, nginx-proxy will default to the service running on port 80. If you need to specify a different port, you can set a VIRTUAL_PORT env var to select a different one. If your container only exposes one port and it has a VIRTUAL_HOST env var set, that port will be selected.
Multiple Hosts
If you need to support multipe virtual hosts for a container, you can separate each entry with commas. For example, foo.bar.com,baz.bar.com,bar.com and each host will be setup the same.
Separate Containers
nginx-proxy can also be run as two separate containers using the jwilder/docker-gen image and the official nginx image.
You may want to do this to prevent having the docker socket bound to a publicly exposed container service.
To run nginx proxy as a separate container you'll need to have nginx.tmpl on your host system.
First start nginx with a volume:
$ docker run -d -p 80:80 --name nginx -v /tmp/nginx:/etc/nginx/conf.d -t nginx
Then start the docker-gen container with the shared volume and template:
$ docker run --volumes-from nginx \
-v /var/run/docker.sock:/tmp/docker.sock \
-v $(pwd):/etc/docker-gen/templates \
-t docker-gen -notify-sighup nginx -watch --only-published /etc/docker-gen/templates/nginx.tmpl /etc/nginx/conf.d/default.conf
Finally, start your containers with VIRTUAL_HOST environment variables.
$ docker run -e VIRTUAL_HOST=foo.bar.com ...