GitHub workflow improvements (#1306)

* lint and action updates

* add custom image tag action

* remove publish infra bloat

* replace cancel action with native concurrency control

* ignore all docs changes for release trigger

* image action updates

* update publish trigger paths

* simplify semver checks

* make it possible to call publish

* add tests for custom action

* rename publish workflows

* call publish after successful package release

* fix inputs and published package parsing

* clarify image tag action errors

* move test action

* add test events

* add changesets action mock

* add docs checks

* add github action test readme

* fix docs check on push

* update action versions in docs

* cache npm for docs check

* pretend to fix bad docs link

* fix docs link

* Revert "fix docs link"

This reverts commit a7508f5.

* Revert "Revert "fix docs link""

This reverts commit ec642af.

* improve caching

* disable automatic publishing after release

* limit docs checks to pushes to main and PRs

* fix broken links

* prevent word splitting and globbing

* use latest checkout action everywhere

* correctly detect prereleases as valid semver

* update to latest cache action

Author: nicktrn

.github/actions/get-image-tag/action.yml

@@ -0,0 +1,84 @@
+name: "#️⃣ Get image tag (action)"
+
+description: This action gets the image tag from the commit ref or input (if provided)
+
+outputs:
+  tag:
+    description: The image tag
+    value: ${{ steps.get_tag.outputs.tag }}
+  is_semver:
+    description: Whether the tag is a semantic version
+    value: ${{ steps.check_semver.outputs.is_semver }}
+
+inputs:
+  tag:
+    description: The image tag. If this is set it will return the tag as is.
+    required: false
+    default: ""
+
+runs:
+  using: "composite"
+  steps:
+    - name: "#️⃣ Get image tag (step)"
+      id: get_tag
+      shell: bash
+      run: |
+        if [[ -n "${{ inputs.tag }}" ]]; then
+          tag="${{ inputs.tag }}"
+        elif [[ "${{ github.ref_type }}" == "tag" ]]; then
+          if [[ "${{ github.ref_name }}" == infra-*-* ]]; then
+            env=$(echo ${{ github.ref_name }} | cut -d- -f2)
+            sha=$(echo ${{ github.sha }} | head -c7)
+            ts=$(date +%s)
+            tag=${env}-${sha}-${ts}
+          elif [[ "${{ github.ref_name }}" == v.docker.* ]]; then
+            version="${GITHUB_REF_NAME#v.docker.}"
+            tag="v${version}"
+          elif [[ "${{ github.ref_name }}" == build-* ]]; then
+            tag="${GITHUB_REF_NAME#build-}"
+          else
+            echo "Invalid git tag: ${{ github.ref_name }}"
+            exit 1
+          fi
+        elif [[ "${{ github.ref_name }}" == "main" ]]; then
+          tag="main"
+        else
+          echo "Invalid git ref: ${{ github.ref }}"
+          exit 1
+        fi
+        echo "tag=${tag}" >> "$GITHUB_OUTPUT"
+
+    - name: 🔍 Check for validity
+      id: check_validity
+      shell: bash
+      env:
+        tag: ${{ steps.get_tag.outputs.tag }}
+      run: |
+        if [[ "${tag}" =~ ^[a-z0-9]+([._-][a-z0-9]+)*$ ]]; then
+          echo "Tag is valid: ${tag}"
+        else
+          echo "Tag is not valid: ${tag}"
+          exit 1
+        fi
+
+    - name: 🆚 Check for semver
+      id: check_semver
+      shell: bash
+      env:
+        tag: ${{ steps.get_tag.outputs.tag }}
+      # Will match most semver formats except build metadata, i.e. v1.2.3+build.1
+      # Valid matches:
+      # v1.2.3
+      # v1.2.3-alpha
+      # v1.2.3-alpha.1
+      # v1.2.3-rc.1
+      # v1.2.3-beta-1
+      run: |
+        if [[ "${tag}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z-]+(\.[0-9A-Za-z-]+)*)?$ ]]; then
+          echo "Tag is a semantic version: ${tag}"
+          is_semver=true
+        else
+          echo "Tag is not a semantic version: ${tag}"
+          is_semver=false
+        fi
+        echo "is_semver=${is_semver}" >> "$GITHUB_OUTPUT"

.github/test/README.md

@@ -0,0 +1,70 @@
+# GitHub Action Tests
+
+This directory contains necessary files to allow local testing of GitHub Actions workflows, composite actions, etc. You will need to install [act](https://github.com/nektos/act) to perform tests.
+
+## Workflow tests
+
+Trigger specific workflow files by specifying their full path:
+
+```
+act -W .github/workflow/release.yml
+```
+
+You will likely need to override any custom runners we use, e.g. buildjet. For example:
+
+```
+override=catthehacker/ubuntu:act-latest
+
+act -W .github/workflow/release.yml \
+    -P buildjet-8vcpu-ubuntu-2204=$override
+
+# override multiple images at the same time
+act -W .github/workflow/release.yml \
+    -P buildjet-8vcpu-ubuntu-2204=$override \
+    -P buildjet-16vcpu-ubuntu-2204=$override
+```
+
+Trigger with specific event payloads to test pushing to branches or tags:
+
+```
+override=catthehacker/ubuntu:act-latest
+
+# simulate push to main
+act -W .github/workflow/publish.yml \
+    -P buildjet-8vcpu-ubuntu-2204=$override \
+    -P buildjet-16vcpu-ubuntu-2204=$override \
+    -e .github/events/push-tag-main.json
+
+# simulate a `build-` prefixed tag
+act -W .github/workflow/publish.yml \
+    -P buildjet-8vcpu-ubuntu-2204=$override \
+    -P buildjet-16vcpu-ubuntu-2204=$override \
+    -e .github/events/push-tag-buld.json
+```
+
+By default, `act` will send a push event. To trigger a different event:
+
+```
+# basic syntax
+act <EVENT> ...
+
+# simulate a pull request
+act pull_request
+
+# only trigger a specific workflow
+act pull_request -W .github/workflow/pr_checks.yml
+```
+
+## Composite action tests
+
+The composite (custom) action tests can be run by triggering the `test-actions` workflow:
+
+```
+act -W .github/test/test-actions.yml
+```
+
+## Helpful flags
+
+- `--pull=false` - perform fully offline tests if all images are already present
+- `-j <job_name>` - run the specified job only
+- `-l push` - list all workflows with push triggers

.github/test/events/push-main.json

@@ -0,0 +1,3 @@
+{
+  "ref": "refs/heads/main"
+}

.github/test/events/push-tag-build.json

@@ -0,0 +1,3 @@
+{
+  "ref": "refs/tags/build-buildtag"
+}

.github/test/events/push-tag-docker-nonsemver.json

@@ -0,0 +1,3 @@
+{
+  "ref": "refs/tags/v.docker.nonsemver"
+}

.github/test/events/push-tag-docker.json

@@ -0,0 +1,3 @@
+{
+  "ref": "refs/tags/v.docker.1.2.3"
+}

.github/test/events/push-tag-infra-prod.json

@@ -0,0 +1,3 @@
+{
+  "ref": "refs/tags/infra-prod-anything"
+}

.github/test/events/push-tag-infra-test.json

@@ -0,0 +1,3 @@
+{
+  "ref": "refs/tags/infra-test-anything"
+}

.github/test/events/push-tag-semver.json

@@ -0,0 +1,3 @@
+{
+  "ref": "refs/tags/1.2.3"
+}

.github/test/events/push-tag.json

@@ -0,0 +1,3 @@
+{
+  "ref": "refs/tags/standard-tag"
+}