The for loop does not support specifying multiple commands

[QianChenglong]

[pd93]

This is by design. The recommended way to do this would be something like this:

version: 3

vars:
  IMAGE: my/image
  GIT_VERSION: latest

tasks:
  release:
    vars:
      OS: linux
      ARCH: amd64 arm64
      TARGET: "{{.IMAGE}}:{{.GIT_VERSION}}"
    cmds:
      - for: { var: ARCH }
        task: release-arch
        vars:
          OS: "{{.OS}}"
          ARCH: "{{.ITEM}}"
          TARGET: "{{.TARGET}}"

  release-arch:
    internal: true # optional
    cmds:
      - docker manifest create {{.TARGET}} {{.TARGET}}-{{.OS}}-{{.ARCH}}
      - docker manifest annotate {{.TAGET}} {{.TARGET}}-{{.OS}}-{{.ARCH}} --os {{.OS}} --arch {{.ARCH}}

This results in:

❯ task -d ./tmp/1599 --dry release
task: [release-arch] docker manifest create my/image:latest my/image:latest-linux-amd64
task: [release-arch] docker manifest annotate  my/image:latest-linux-amd64 --os linux --arch amd64
task: [release-arch] docker manifest create my/image:latest my/image:latest-linux-arm64
task: [release-arch] docker manifest annotate  my/image:latest-linux-arm64 --os linux --arch arm64

if you wanted the release task for each arch to run in parallel, you can also swap cmds for deps in the release task.