HOSTNAME is not properly resolved in setup-apache-ssl-key

[igor-bn]

Hi,
thank you for keeping the image up to date and maintaining it! I faced with some issues while requesting new Lets Encrypt certificate from l3iggs/owncloud:latest (aka 9.1.2-1).

Here is the first issue.
setup-apache-ssl-key first failed with output like this:

This container's Apache server must be reachable from the Internet via http://home-net
Saving debug log to /var/log/letsencrypt/letsencrypt.log
...
  File "/usr/lib/python2.7/site-packages/acme/client.py", line 565, in _check_response
    raise messages.Error.from_json(jobj)
Error: urn:acme:error:malformed :: The request message was malformed :: DNS name does not have enough labels
...

The problem here is that "home-net" is not a full host name, but just a first part before the dot

I found out that following expression did not work properly (setup-apache-ssl-key#34):
: ${HOSTNAME:=$(hostname --fqdn)}

Not sure what it does, but simple assignment just works fine for me
HOSTNAME=$(hostname --fqdn)

Can you please check if you have the same issue with the image?

[jswetzen]

Are you using docker-compose? I got the same error when setting it like hostname: my.host.com in my compose file, but --hostname my.host.com with docker run works fine. My workaround with docker-compose is to add HOSTNAME=my.host.com before EMAIL=... in the actual command, to manually force the correct hostname.

[konpatp]

@jswetzen in docker-compose, if you add domainname: my.host.com (also), it will work.

[igor-bn]

thank you guys for your replies! In did I use docker compose. The option with domainname: my.host.com did work for me.