CCM-12133: pr num lookup

Author: masl2

.github/actions/build-proxies/action.yml

@@ -36,7 +36,6 @@ runs:
           echo "INSTANCE=$PROXYGEN_API_NAME-PR-$PR_NUMBER" >> $GITHUB_ENV
           echo "SANDBOX_TAG=pr$PR_NUMBER" >> $GITHUB_ENV
           echo "MTLS_NAME=notify-supplier-mtls-pr$PR_NUMBER" >> $GITHUB_ENV
-
         fi
 
     - name: Install Proxygen client

.github/workflows/manual-proxy-internal-dev-deploy.yaml

@@ -2,10 +2,10 @@ name: Deploy proxy to internal-dev
 
 on:
   workflow_dispatch:
-    inputs:
-      pr_number:
-        description: "PR Number for PR Environment"
-        required: false
+  push:
+    branches:
+      - "**"
+      - '!master'
 
 permissions:
   contents: read
@@ -17,7 +17,6 @@ jobs:
     env:
       PROXYGEN_API_NAME: notify-supplier-api
       PROXYGEN_PRIVATE_KEY: ${{ secrets.PROXYGEN_PRIVATE_KEY }}
-      PR_NUMBER: ${{ github.event.inputs.pr_number }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -31,8 +30,31 @@ jobs:
         run: npm ci
         shell: bash
 
+      - name: "Check if pull request exists for this branch"
+        id: pr_exists
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          branch_name=${GITHUB_HEAD_REF:-$(echo $GITHUB_REF | sed 's#refs/heads/##')}
+          echo "Current branch is '$branch_name'"
+
+          pr_json=$(gh pr list --head "$branch_name" --state open --json number --limit 1)
+          pr_number=$(echo "$pr_json" | jq -r '.[0].number // empty')
+
+          if [[ -n "$pr_number" ]]; then
+            echo "Pull request exists: #$pr_number"
+            echo "does_pull_request_exist=true" >> $GITHUB_OUTPUT
+            echo "pr_number=$pr_number" >> $GITHUB_OUTPUT
+          else
+            echo "Pull request doesn't exist"
+            echo "does_pull_request_exist=false" >> $GITHUB_OUTPUT
+            echo "pr_number=" >> $GITHUB_OUTPUT
+          fi
+
       - name: Setup Proxy Name and target
         shell: bash
+        env:
+          PR_NUMBER: ${{ steps.pr_exists.outputs.pr_number }}
         run: |
           if [ -z $PR_NUMBER ]
           then
@@ -65,6 +87,8 @@ jobs:
       - name: Build internal dev oas
         working-directory: .
         shell: bash
+        env:
+          PR_NUMBER: ${{ steps.pr_exists.outputs.pr_number }}
         run: |
           if [ -z $PR_NUMBER ]
           then