Trying Docker...I think.

[ahbanks]

I'm new to Docker and wanted to give it a spin with fishnet. Currently, I have a 3 node swarm. I've tried to create a fishnet service (using docker service create) across these, but I keep getting "Detected task failure" messages and it doesn't look like the service ever starts.

...any pointers on where I'm going wrong?

[FirstClassCitizenFCC]

what command to you run? do you get log output if you run it in foreground mode (without -d switch)?

[FirstClassCitizenFCC]

The "detected task failure" message indicates your container fails to start - like you already assumed.
I never used docker swarm. What you can do is try to run it on a single node with the command from the install-doc

docker run -it --name fishnet -e KEY=abcdef niklasf/fishnet:2

It shoud print you some log ouput indicating if it is working or not.

You can stop the execution with Ctrl+C.

Please provide the log output if your container fails to startup properly.

[ahbanks]

The command from the install-doc does work (although it keeps the terminal open, part of what I'm wanting to avoid).

I've tried several variations of docker service create --name fishnet --replicas=3 niklasf/fishnet -e KEY=<mykey>

They all grind a while and eventually fail to start.

[FirstClassCitizenFCC]

On a single node you can run it in the background if you use the -d switch.

docker run -it -d --name fishnet -e KEY=abcdef niklasf/fishnet:2