One-liner install error: cudnn

[BlackToothGrin96]

Hi, I'm trying to install the stack using the one-liner command:

curl -L bit.ly/dev-machine | bash -s -- -w ~{{ros_user}}/projects/shadow_robot/base

But I keep getting the error:

fatal: [localhost]: FAILED! => stdout => Reading package lists... Building dependency tree... Reading state information... Calculating upgrade... The following packages will be upgraded: libcudnn7 Preconfiguring packages ... 1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0 B/157 MB of archives. After this operation, 24.5 MB disk space will be freed. (Reading database ... 527446 files and directories currently installed.) Preparing to unpack .../libcudnn7_7.6.0-0lambda1_amd64.deb ... dpkg: error processing archive /var/cache/apt/archives/libcudnn7_7.6.0-0lambda1_amd64.deb (--unpack): new libcudnn7 package pre-installation script subprocess returned error exit status 30 Errors were encountered while processing: /var/cache/apt/archives/libcudnn7_7.6.0-0lambda1_amd64.deb

I'm not sure why I am getting this error as I have cudnn installed already; It seems like the script is trying to update my libcudnn libraries and failing.
Is there any way I can skip this step as I already have cudnn installed?