I need to run a node application for which I've created an /etc/systemd/system/myprj.service file.  To run the app I need to change directory to the location of the script and then execute npm.  I tried it like this:cd /var/www/prj && /usr/local/bin/npm startbut systemd just pukes.  I've reviewed the documentation for a way to indicate the current working directory for the execution but I don't see one. how should this work?
Setting the working directory when invoking a daemon?
systemd