Use HAProxy to create a HTTPS proxy.
To understand settings in configuration files, see
Disclaimer about load balancing
This container uses HAProxy, but it does not perform load balancing.
It's just for adding an HTTPS layer to any HTTP container.
However, feel free to fork or subclass this image to do it, or just use other
container for load balancing and link it to this one to add HTTPS to it.
Just link it to any container listening on port 80
(let's call it LC for Linked Container):
docker run -d -p 80:80 -p 443:443 --link LC:www yajo/https-proxy
Then navigate to
https://localhost and add security exception.
When the LC exposes other port
The proxy will use
www:$PORT as origin, so run it as:
docker run -e PORT=8080 --link LC:www yajo/https-proxy
When you have a real certificate
You can put your
cert.pem files under
in a subimage. Your
Dockerfile will be similar to:
FROM yajo/https-proxy MAINTAINER email@example.com ADD cert.pem key.pem /etc/ssl/private/
You can also supply them with environment variables:
docker run -e KEY="$(cat key.pem)" -e CERT="$(cat cert.pem)" --link LC:www yajo/https-proxy
When you want custom error pages
This is preconfigured to use error pages from the examples. Just override the
corresponding error page found in
/usr/local/etc/haproxy/errors in your
FROM yajo/https-proxy MAINTAINER firstname.lastname@example.org ADD 400.http 503.http /usr/local/etc/haproxy/errors/
Automatic redirection of HTTP
This image will redirect all HTTP traffic to HTTPS, but this is a job that
should be handled by your LC in production to avoid this little overhead.
To help your LC know it is proxied (because it will seem to the LC like
requests come in HTTP form), all requests will have this additional
You can use that to make HTTPS (
redirections, or just use relative (
../other-page) or protocol-agnostic
//example.com/other-page) redirections and it will always work
anywhere (this is a good practice, BTW).
If you don't want this forced redirection (to maintain both HTTP and HTTPS
versions of your site), just expose port 80 from your LC and port 443
from the proxy.
To test what HTTP headers get to the backend, clone the repo and run on it:
Please send any feedback (issues, questions) to the issue tracker.