Remove the deprecated docker executor

[alexec]

Remove the executor code. Remove docker binary from executor.

[terrytangyuan]

This would also remove the gzip binary:

argo-workflows/workflow/executor/docker/docker.go

Line 445 in 6566396

func getDockerCpCmd(containerID, sourcePath string, compressionLevel int, destPath string) string {

[blkperl]

@alexec are we ready for PRs that remove this to be opened?

[alexec]

Yes please. Get on it!

[terrytangyuan]

@blkperl I actually have something in progress locally but let me know if you’d like to work on it and I’ll re-assign to you.

[alexec]

We also need to remove other executors. Plenty for all.

[blkperl]

@terrytangyuan I will grab a different one, I didn't notice you were assigned 👍🏻

[terrytangyuan]

@blkperl Feel free to grab any in #7829 and re-assign to you.