Zombienet: how to build a docker image with my parachain and adder-collator binary?

Question

In my Zombienet example network definition file, I have replaced :

docker.io/paritypr/polkadot-debug:master

with

docker.io/parity/polkadot:v0.9.18

so now my Zombienet example network definition file is the following:

[relaychain]
default_image = "docker.io/parity/polkadot:v0.9.18"
default_command = "polkadot"
default_args = [ "-lparachain=debug" ]

chain = "rococo-local"

  [[relaychain.nodes]]
  name = "alice"
  validator = true

  [[relaychain.nodes]]
  name = "bob"
  validator = true

[[parachains]]
id = 2000

  [parachains.collator]
  name = "collator01"
  image = "docker.io/paritypr/colander:master"
  command = "adder-collator"
  
[types.Header]
number = "u64"
parent_hash = "Hash"
post_state = "Hash"

Now. I need to make a docker image to replace

docker.io/paritypr/colander:master

But my new image should have adder-collator binary for adder-collator command to work.

So how can I add that adder-collator to my docker image?

That colander image is hosted here https://hub.docker.com/layers/colander/paritypr/colander/master/images/sha256-3c76e13d988aec875150e024d027af45aefc12f2de98f97db686e558a3d30513?context=explore

Answer 1

the adder-collator is very simple collator used for testing purposes and is compiled from the polkadot repo

cargo build --profile testnet --verbose -p test-parachain-adder-collator

And then injected into the image using this Dockerfile and published under paritypr.

Thanks!

Answer 2

You need to add your collator command, which is target/release/parachain-collator if your parachain is based on substrate-parachain-template. Notice there is no DOT "." before the command!

  [parachains.collator]
  name = "collator01"
  image = "gcr.io/x-network/collator:latest"
  command = "target/release/parachain-collator"
  args = ["--parachain-id 2000"]