Merge pull request #44 from 10up/install-unzip-module

Fix: install unzip so ci jobs can extract zip archives

Author: felipeelia

Dockerfile

@@ -68,6 +68,7 @@ RUN apt-get update && \
       software-properties-common \
       sshpass \
       subversion \
+      unzip \
       vim \
       wget \
       xdg-utils \