Use GITHUB_ENV to store timestamp

.github/workflows/aws_deploy.yml

@@ -80,8 +80,7 @@ jobs:
 
       - name: Get timestamp
         id: timestamp
-        run: |
-          echo "::set-output name=timestamp::$(echo "timestamp=$(date +%Y%m%d%H%M%S)")"
+        run: echo "timestamp=$(date +%Y%m%d%H%M%S)" >> $GITHUB_ENV
 
       - name: Get latest release with tag
         id: latestrelease
@@ -104,13 +103,13 @@ jobs:
         id: tags
         run: |
           echo "::set-output name=commit-tag::$(if [[ ${{ inputs.environment == 'production' }} ]]; then echo $(git log -1 '--format=format:%H'); else echo ${{ github.sha }}; fi)"
-          echo "::set-output name=additional-tag::$(if [[ ${{ inputs.environment == 'production' }} ]]; then echo ${{ steps.latestrelease.outputs.releasetag }}; else echo ${{ steps.timestamp.outputs.timestamp }}; fi)"
+          echo "::set-output name=additional-tag::$(if [[ ${{ inputs.environment == 'production' }} ]]; then echo ${{ steps.latestrelease.outputs.releasetag }}; else echo ${{ env.timestamp }}; fi)"
 
       - name: Add environment tag to existing image
         env:
           registry: ${{ steps.ecr-login.outputs.registry }}
           commit_tag: ${{ steps.tags.outputs.commit-tag }}
-          readable_tag: ${{ inputs.environment }}-${{ steps.tags.outputs.additional-tag }}-${{ steps.timestamp.outputs.timestamp }}
+          readable_tag: ${{ inputs.environment }}-${{ steps.tags.outputs.additional-tag }}-${{ env.timestamp }}
         run: |
           manifest=$(aws ecr batch-get-image --repository-name $repository --image-ids imageTag=$commit_tag --output text --query images[].imageManifest)
           aws ecr put-image --repository-name $repository --image-tag $readable_tag --image-manifest "$manifest"