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Sebastiaan van Stijn d68be71a3f Optimize Dockerfile. 
This optimizes the Dockerfile by;

- Combining RUN statements so that files are removed in the
  same layer as they are added.
- Removing the downloaded .tar.gz of the docker-gen binary
  after expanding
- Adding `--no-install-recommends` (but explicitly installing
  ca-certificates)
- Replacing `ADD` with `COPY` (recommended if no unpacking is
  required)

Also added a `.dockerignore` file to prevent the `.git` directory
and README.md being added to the image.

These changes reduce the size of the image with 34 MB (was 268.4 MB,
now 233.9 MB), and results in less layers being produced.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2014-11-26 11:00:01 +01:00
.dockerignore Optimize Dockerfile. 2014-11-26 11:00:01 +01:00
Dockerfile Optimize Dockerfile. 2014-11-26 11:00:01 +01:00
nginx.tmpl Set "Connection: upgrade" when we receive an "Upgrade" header 2014-10-25 17:13:17 -07:00
Procfile Only add source after dependency download 2014-09-17 20:23:27 +01:00
README.md Typo in readme 2014-11-15 20:47:38 -08:00

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  ...