Commits on Jul 4, 2024

1. This fix restores the safety of triggering the release automation on … …

   …an existing release which was lost in the updates for publishing multi-arch Docker images in #194.
   
   The buildpack matrix output can contain two variants of images to publish:
   
   - A CNB with a single target. E.g.;
   
       ```json
       {
         "buildpack_id": "heroku/nodejs-function",
         "buildpack_version": "3.2.6",
         "buildpack_type": "composite",
         "buildpack_dir": "/home/runner/work/buildpacks-nodejs/buildpacks-nodejs/meta-buildpacks/nodejs-function",
         "targets": [
           {
             "os": "linux",
             "arch": "amd64",
             "rust_triple": "x86_64-unknown-linux-musl",
             "oci_target": "linux/amd64",
             "cnb_file": "heroku_nodejs-function.cnb",
             "stable_tag": "docker.io/heroku/buildpack-nodejs-function:3.2.6",
             "temporary_tag": "docker.io/heroku/buildpack-nodejs-function:_9781380433",
             "output_dir": "/home/runner/work/buildpacks-nodejs/buildpacks-nodejs/./packaged/x86_64-unknown-linux-musl/release/heroku_nodejs-function"
           }
         ],
         "image_repository": "docker.io/heroku/buildpack-nodejs-function",
         "stable_tag": "docker.io/heroku/buildpack-nodejs-function:3.2.6",
         "temporary_tag": "docker.io/heroku/buildpack-nodejs-function:_9781380433"
       }
       ```
   
   - Or a CNB with multiple targets. E.g.;
   
       ```json
       {
         "buildpack_id": "heroku/nodejs-npm-install",
         "buildpack_version": "3.2.6",
         "buildpack_type": "libcnb",
         "buildpack_dir": "/home/runner/work/buildpacks-nodejs/buildpacks-nodejs/buildpacks/nodejs-npm-install",
         "targets": [
           {
             "os": "linux",
             "arch": "amd64",
             "rust_triple": "x86_64-unknown-linux-musl",
             "oci_target": "linux/amd64",
             "cnb_file": "heroku_nodejs-npm-install_linux-amd64.cnb",
             "stable_tag": "docker.io/heroku/buildpack-nodejs-npm-install:3.2.6_linux-amd64",
             "temporary_tag": "docker.io/heroku/buildpack-nodejs-npm-install:_9781380433_linux-amd64",
             "output_dir": "/home/runner/work/buildpacks-nodejs/buildpacks-nodejs/./packaged/x86_64-unknown-linux-musl/release/heroku_nodejs-npm-install"
           },
           {
             "os": "linux",
             "arch": "arm64",
             "rust_triple": "aarch64-unknown-linux-musl",
             "oci_target": "linux/arm64",
             "cnb_file": "heroku_nodejs-npm-install_linux-arm64.cnb",
             "stable_tag": "docker.io/heroku/buildpack-nodejs-npm-install:3.2.6_linux-arm64",
             "temporary_tag": "docker.io/heroku/buildpack-nodejs-npm-install:_9781380433_linux-arm64",
             "output_dir": "/home/runner/work/buildpacks-nodejs/buildpacks-nodejs/./packaged/aarch64-unknown-linux-musl/release/heroku_nodejs-npm-install"
           }
         ],
         "image_repository": "docker.io/heroku/buildpack-nodejs-npm-install",
         "stable_tag": "docker.io/heroku/buildpack-nodejs-npm-install:3.2.6",
         "temporary_tag": "docker.io/heroku/buildpack-nodejs-npm-install:_9781380433"
       }
       ```
   
   When the automation runs successfully, either a single image or multiple images + a manifest list will have been published. Both the single image and manifest list are tagged with the value `matrix.stable_tag`. Therefore, if this tag exists, we shouldn't need to publish anything to Docker and we can skip that work.
   
   Fixes #238

   

   colincasey committed Jul 4, 2024
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2. Remove added whitespace

   

   colincasey committed Jul 4, 2024
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