charm attach ~adam-stokes/xenial/dokuwiki stable-release=/home/adam/Downloads/dokuwiki-stable.tgz
ERROR can't upload resource: cannot post resource: cannot unmarshal error response "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\n<html><head>\n<title>502 Bad Gateway</title>\n</head><body>\n<h1>Bad Gateway</h1>\n<p>The proxy server received an invalid\r\nresponse from an upstream server.<br />\r\n</p>\n<hr>\n<address>Apache/2.4.7 (Ubuntu) Server at api.jujucharms.com Port 443</address>\n</body></html>\n": invalid character '<' looking for beginning of value