Update drone.yml

drone.yml

   environment:
     MAKEFLAGS: "-j 4"
   commands:
-    - echo 'Acquire::http { Proxy "http://unino.de:3142"; }' | tee -a /etc/apt/apt.conf.d/proxy
+    - echo 'Acquire::http { Proxy "http://172.17.0.1:3142"; }' | tee -a /etc/apt/apt.conf.d/proxy
     - apt-get update
     - apt-get --yes upgrade
     - apt-get --yes install build-essential libc6-dev libhidapi-dev libssl-dev