title: How to synchronize Maven artefacts between nexus repositories (semi-)automatically?
body: <p>We have a Nexus repository for maven artefacts for a Java EE application on our premises. Our developers connect against this repository while doing a local build.</p>
  
  <p>Yet, for a complete build we need artefacts from a customer situated Nexus repository, which is only available by manual VPN connection - and while being connected, we have no connection to our own one.</p>
  
  <p>Now, what would be a good way to (at least semi-)automatically get all new artefacts from the customer site while being connected and put them into our own repository?</p>
  
  <p>My idea so far was to run a Nexus locally on the machine doing the VPN connection and have it synchronize against both ours and theirs - does that sound reasonable or has any one a better idea?
  How can this be scripted or configured via the Nexus web frontend so that it can synchronize with one of the 2 sides each time we are connected to one or the other network?</p>