Docker Service - Replicated Containers keep rebooting

Docker version 17.03.0-ce, build 60ccb22
Docker Swarm with 4 total nodes – local network

Issue: Containers constantly rebooting

sudo docker service ls
ID NAME MODE REPLICAS IMAGE
le7q0ig6uzqs MyNetWS replicated 0/4 MyNetWS /rpi-service:latest

sudo docker service ps le7q0ig6uzqs
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
nmguk8u76wp8 MyNetWS .1 MyNetWS /rpi-service:latest MyNetWSnn01 Ready Ready 10 seconds ago
ujzxgtuttzge _ MyNetWS .1 MyNetWS /rpi-service:latest MyNetWSnn01 Shutdown Complete 10 seconds ago
uievrtj0x4ny _ MyNetWS .1 MyNetWS /rpi-service:latest MyNetWSnn02 Shutdown Complete 42 seconds ago
jn5s5kwdvo1f _ MyNetWS .1 MyNetWS /rpi-service:latest MyNetWSnn02 Shutdown Complete about a minute ago
ii9e7jafu19j _ MyNetWS .1 MyNetWS /rpi-service:latest MyNetWSnn02 Shutdown Complete about a minute ago
q3v8ike63k33 MyNetWS .2 MyNetWS /rpi-service:latest MyNetWSnn03 Ready Ready 26 seconds ago
g6fky3fxp9xo _ MyNetWS .2 MyNetWS /rpi-service:latest MyNetWSnn03 Shutdown Complete 27 seconds ago
ccwn297swmb8 _ MyNetWS .2 MyNetWS /rpi-service:latest MyNetWSnn03 Shutdown Complete 59 seconds ago
vz7k3sew2w1p _ MyNetWS .2 MyNetWS /rpi-service:latest MyNetWSnn03 Shutdown Complete about a minute ago
zil4f0z63qpa _ MyNetWS .2 MyNetWS /rpi-service:latest MyNetWSnn01 Shutdown Complete 2 minutes ago
qiiy9gpf19ip MyNetWS .3 MyNetWS /rpi-service:latest MyNetWSnn01 Ready Ready 8 seconds ago
udar8dmcv4la _ MyNetWS .3 MyNetWS /rpi-service:latest MyNetWSnn03 Shutdown Complete 8 seconds ago
wby8irlaylip _ MyNetWS .3 MyNetWS /rpi-service:latest MyNetWSnn02 Shutdown Complete 40 seconds ago
jdh62qdke6w9 _ MyNetWS .3 MyNetWS /rpi-service:latest MyNetWSnn03 Shutdown Complete about a minute ago
u1xkugdvybvk _ MyNetWS .3 MyNetWS /rpi-service:latest MyNetWSnn03 Shutdown Complete about a minute ago
nqkl1zwilgxi MyNetWS .4 MyNetWS /rpi-service:latest MyNetWSnn03 Running Starting less than a second ago
mx55jdgv49mt _ MyNetWS .4 MyNetWS /rpi-service:latest MyNetWSnn02 Shutdown Complete 31 seconds ago
hyb0omygnupi _ MyNetWS .4 MyNetWS /rpi-service:latest MyNetWSnn03 Shutdown Complete about a minute ago
zdqdheo14cvw _ MyNetWS .4 MyNetWS /rpi-service:latest MyNetWSnn02 Shutdown Complete about a minute ago
mq83abydjqoo _ MyNetWS .4 MyNetWS /rpi-service:latest MyNetWSnn03 Shutdown Complete 2 minutes ago

The image: MyNetWS /rpi-service:latest is running a raspbian OS – but it seems that any image I run, after some time; the containers just end up turning on and rebooting themselves over and over again.

I did try: sudo docker service update le7q0ig6uzqs --stop-grace-period 1h

but the containers still just keep rebooting right after they are created.
*Note: the containers did work at first, but after rebooting the host device it seems to have issues.

Any help would be appreciated,

thanks