Update docker to obtain cert at runtime, not buildtime

since the latter doesn't work

res/docker-entrypoint.sh

@@ -1,11 +1,30 @@
-#!/bin/sh
+#!/bin/bash
 
-echo " >>> starting nginx <<< "
+echo " >>> Starting nginx <<< "
 
 mkdir /run/nginx # needed because of bug in package
 /usr/sbin/nginx -t
 /usr/sbin/nginx
 
-echo " >>> starting uwsgi <<< "
+echo " >>> Checking / Installing SSL certificate <<< "
+
+if [[ ${DOMAIN} ]]
+then
+	echo "Obtaining cert for '${DOMAIN}' ..."
+	echo "Registering with email '${LE_EMAIL}' ..."
+
+	certbot -n \
+		--nginx \
+		--keep-until-expiring \
+		--redirect \
+		--agree-tos \
+		--cert-name ${DOMAIN} \
+		-d ${DOMAIN} \
+		-m ${LE_EMAIL}
+
+	echo "Checked/Installed SSL certificate."
+fi
+
+echo " >>> Starting uwsgi <<< "
 
 /usr/sbin/uwsgi --ini /root/ftracker/res/ftracker.alpine.uwsgi.ini