chore: update repo semaphore task

Author: ConfluentSemaphore

.semaphore/cp_dockerfile_promote.yml

@@ -0,0 +1,57 @@
+# This file is managed by ServiceBot plugin - Semaphore. The content in this file is created using a common
+# template and configurations in service.yml.
+# Any modifications made to ths file will be overwritten by the generated content in nightly runs.
+# For more information, please refer to the page:
+# https://confluentinc.atlassian.net/wiki/spaces/Foundations/pages/2871296194/Add+SemaphoreCI
+version: v1.0
+name: build-test-release
+agent:
+  machine:
+    type: s1-prod-ubuntu20-04-amd64-1
+
+fail_fast:
+  cancel:
+    when: "true"
+
+execution_time_limit:
+  hours: 1
+
+queue:
+  - when: "branch != 'master' and branch !~ '[0-9]+\\.[0-9]+\\.[0-9]+'"
+    processing: parallel
+
+global_job_config:
+  prologue:
+    commands:
+      - checkout
+      - . vault-setup
+      # Semaphore does not accept empty values for parameters.
+      - if [[ -z "$CONFLUENT_VERSION" ]]; then echo "Must specify CONFLUENT_VERSION" && exit 1; fi
+      - if [[ -z "$IMAGE_REVISION" ]]; then echo "Must specify IMAGE_REVISION" && exit 1; fi
+      - if [[ -z "$PROMOTE_OS_TYPE" ]]; then echo "Must specify PROMOTE_OS_TYPE" && exit 1; fi
+      - >-
+        echo """
+        Parameters:
+        ==========================
+        CONFLUENT_VERSION: $CONFLUENT_VERSION
+        IMAGE_REVISION: $IMAGE_REVISION
+        UPDATE_LATEST_TAG: $UPDATE_LATEST_TAG
+        PACKAGING_BUILD_NUMBER: $PACKAGING_BUILD_NUMBER
+        PROMOTE_OS_TYPE: $PROMOTE_OS_TYPE
+        """
+      - export BRANCH_TAG=$(echo $SEMAPHORE_GIT_BRANCH | tr / -)
+      - export DOCKER_PROD_REGISTRY="519856050701.dkr.ecr.us-west-2.amazonaws.com/docker/prod/"
+      - export PROMOTED_TAG_PREFIX="$CONFLUENT_VERSION-$IMAGE_REVISION"
+      - if [[ ! "$PACKAGING_BUILD_NUMBER" ]]; then export $PACKAGING_BUILD_NUMBER="latest"; fi
+      - docker login --username $DOCKERHUB_USER --password $DOCKERHUB_APIKEY
+      - export AMD_ARCH=.amd64
+
+blocks:
+  - name: Promote AMD
+    dependencies: []
+    task:
+      jobs:
+  - name: Create Manifest
+    dependencies: ["Promote AMD"]
+    task:
+      jobs: