[DEVOPS-337] Switch to labels for ephemeral deployment triggers (#95)

<details open>
<summary><a href="https://amuniversal.atlassian.net/browse/DEVOPS-337"
title="DEVOPS-337" target="_blank">DEVOPS-337</a></summary>
  <br />
  <table>
    <tr>
      <th>Summary</th>
<td>TPS UI ephemeral deployments breaking on PR descriptions with code
formatting</td>
    </tr>
    <tr>
      <th>Type</th>
      <td>
<img alt="Bug"
src="https://amuniversal.atlassian.net/rest/api/2/universal_avatar/view/type/issuetype/avatar/10308?size=medium"
/>
        Bug
      </td>
    </tr>
    <tr>
      <th>Status</th>
      <td>To Do</td>
    </tr>
    <tr>
      <th>Points</th>
      <td>N/A</td>
    </tr>
    <tr>
      <th>Labels</th>
      <td>-</td>
    </tr>
  </table>
</details>
<!--
do not remove this marker as it will break action-jira-linter's
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  added_by_jira_lint
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---

<!-- Please make sure you read the contribution guidelines and then fill
out the blanks below.

Please format the PR title appropriately based on the type of change:
  [JIRA-XXX]: <description>
-->

## Description

- Switch to labels for ephemeral deployment triggers

## Related Links

<!-- List any links related to this pull request here

Replace "JIRA-XXX" with the your Jira issue key -->

- Jira Issue: DEVOPS-337

.github/workflows/ephemeral-deploy.yaml

@@ -60,21 +60,24 @@ env:
 jobs:
  prepare:
  name: Preparation Step
- if: ${{ github.event.action == 'labeled' && github.event.label.name == 'ephemeral-deployment' || github.event_name == 'pull_request' && github.event.action != 'labeled' && contains(github.event.pull_request.labels.*.name, 'ephemeral-deployment') }}
+ if: ${{ github.event.action == 'labeled' && startsWith(github.event.label.name, 'preview:') || github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'preview:') }}
  runs-on: ubuntu-latest
  steps:
- - name: Retrieve Jira ticket ID
+ - name: Get Jira ticket ID
  id: jira-ticket
  run: |
  PR_BRANCH=$(echo "${{ env.githubPrBranch }}" | grep -Eo "\b[A-Z][A-Z0-9_]+-[1-9][0-9]*" || true)
  PR_TITLE=$(echo "${{ env.githubPrTitle }}" | grep -Eo "\b[A-Z][A-Z0-9_]+-[1-9][0-9]*" || true)
  PR_DESC=$(echo "${{ env.githubPrDescription }}" | grep -Eo "\b[A-Z][A-Z0-9_]+-[1-9][0-9]*" || true)
 
+ echo "PR branch: ${PR_BRANCH}"
+ echo "PR title: ${PR_TITLE}"
  for var in ${PR_BRANCH} ${PR_TITLE} ${PR_DESC}; do JIRA_TICKET_ID=$(echo $var | grep -E ".") && break ; done
  if [ -z "${JIRA_TICKET_ID}" ]; then
  echo "::error::A Jira issue key is missing from your branch name, pull request title, and pull request description. Please confirm it is linked properly in the pull request."
  exit 1
  fi
+ echo "Jira ticket: ${JIRA_TICKET_ID}"
  JIRA_TICKET_ID_LC=$(echo "${JIRA_TICKET_ID}" | tr '[:upper:]' '[:lower:]')
 
  echo "jiraTicketIdLc=${JIRA_TICKET_ID_LC}" >> $GITHUB_OUTPUT
@@ -91,13 +94,14 @@ jobs:
  id: environment
  shell: bash
  run: |
- DESCRIPTION="$(echo '${{ env.githubPrDescription }}' | tr -d '`$)(')"
- ENVIRONMENT=$(echo "${DESCRIPTION}" | grep -Eo "\- \[x\] .+ Key Vaults" | awk -F ' ' '{print $3}' | tr '[:upper:]' '[:lower:]')
- if [ -n "${ENVIRONMENT}" ]; then
+ LABEL=$(echo "${{ join(github.event.pull_request.labels.*.name, ' ') }}" | grep -o 'preview:[^ ]*' | head -n 1)
+ if [ -n "${LABEL}" ]; then
+ ENVIRONMENT=${LABEL#preview:}
+ echo "Environment extracted from label: ${ENVIRONMENT}"
  echo "environment=${ENVIRONMENT}" >> $GITHUB_OUTPUT
  else
- echo "::notice::Unknown environment key vault. Defaulting to development key vault."
- echo "environment=development" >> $GITHUB_OUTPUT
+ echo "::error::No 'preview:[ENVIRONMENT]' label found."
+ exit 1
  fi
  outputs:
  environment: ${{ steps.environment.outputs.environment }}
@@ -107,7 +111,6 @@ jobs:
 
  deploy:
  name: Deploy Azure Container Instance
- if: ${{ github.event.action == 'labeled' && github.event.label.name == 'ephemeral-deployment' || github.event_name == 'pull_request' && github.event.action != 'closed' && github.event.action != 'labeled' && contains(github.event.pull_request.labels.*.name, 'ephemeral-deployment') }}
  needs: [prepare]
  runs-on: ubuntu-latest
  environment: