The LISTEN_PORT_HTTP and LISTEN_PORT_HTTPS env variables can now be specified
on web-service containers in order to cause the proxy to listen on the
specified ports. If you only want to allow listening on a port with SSL, these
variables can be set to the value "None" which causes them to not be used. So,
for example, you could set LISTEN_PORT_HTTP=None in order to only proxy traffic
over a secure link. If one or both of these env vars are omitted, the default
values of 80 and 443 will be used where omitted. NOTE: these ports are
internal ports on the container. If you set LISTEN_PORT_HTTPS=1234, and want
to make this accessible on the WAN at port 5555, then you will do something
like
docker run -p 5555:1234 ...
Additionally, on the proxy container, a CUSTOM_TEMPLATE env variable can be
specified, which will instruct docker-gen to use the specified template instead
of the default template. For example, if CUSTOM_TEMPLATE=/app/mytemplate, then
you will want to either copy your template to the container with 'docker cp',
or mount it from the host filesystem with something like
docker run -v /host/path:/app/mytemplate ...
