fix(docker): make healthcheck work when proxy is set

In docker setups that use a proxy for internet access, exclude the
wget healthcheck from using the proxy when connecting to localhost.

Fix from Norbert Schlemmer.

CHANGES.txt

@@ -65,6 +65,8 @@ Fixed:
 - use unittest.mock rather than mock for
   test/test_hyperdbvals.py. (found by Ralf Schlatterbeck. Fix John
   Rouillard)
+- disable proxy with wget in roundup_healthcheck. (Norbert SCHLEMMER
+  Noschvie on github.com)
 
 Features:
 

scripts/Docker/roundup_healthcheck

@@ -4,4 +4,4 @@
 # returns last one for testing that server is up. Does not test
 # each tracker.
 tracker=$(ps -ef | sed -ne '/roundup-server/s/^.*\s\(\w*\)=.*$/\1/p')
-wget -q -O /dev/null --no-verbose http://localhost:8080/"${tracker:-demo}"/
+wget -q -O /dev/null --proxy off --no-verbose http://localhost:8080/"${tracker:-demo}"/