It appears that nodejs is not available on Jessie arm64.
root@53fe66f5b1c6:/# apt-get update
Ign http://httpredir.debian.org jessie InRelease
Get:1 http://httpredir.debian.org jessie Release.gpg [2373 B]
Get:2 http://httpredir.debian.org jessie Release [148 kB]
Get:3 http://httpredir.debian.org jessie/main arm64 Packages [8544 kB]
Get:4 http://httpredir.debian.org jessie/non-free arm64 Packages [68.7 kB]
Get:5 http://httpredir.debian.org jessie/contrib arm64 Packages [41.6 kB]
Fetched 8805 kB in 11s (796 kB/s)
Reading package lists... Done
root@53fe66f5b1c6:/# apt-get install nodejs-legacy
Reading package lists... Done
Building dependency tree... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
nodejs-legacy : Depends: nodejs (>= 0.6.19~dfsg1-3~) but it is not installable
E: Unable to correct problems, you have held broken packages.
root@53fe66f5b1c6:/# apt-get install nodejs
Reading package lists... Done
Building dependency tree... Done
Package nodejs is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'nodejs' has no installation candidate