SONAR-20590 Add retry mechanism for public and private scan tasks

.cirrus.yml

@@ -80,13 +80,14 @@ private_scan_task:
     - echo "docker.includes=${tag}" >> .cirrus/wss-unified-agent.config
   scan_script:
     - echo "Scan the ${STAGING_IMAGE_NAME}:${tag} image supporting linux/${platform}"
-    - docker pull --platform linux/${platform} "${STAGING_IMAGE_NAME}:${tag}"
+    - .cirrus/pull.sh ${STAGING_IMAGE_NAME} ${tag} ${platform}
     - java -jar wss-unified-agent.jar -c .cirrus/wss-unified-agent.config -apiKey $MEND_API_KEY -product ${WS_PRODUCTNAME} -project ${STAGING_IMAGE_NAME}:${tag} -wss.url ${WS_WSS_URL} -docker.scanImages true
   depends_on: multi_arch_build
 
 public_scan_task: 
   only_if: $CIRRUS_CRON == 'nightly-mend-scan'
   env:
+    platform: amd64
     MEND_API_KEY: VAULT[development/kv/data/mend data.apikey]
     WS_WSS_URL: https://saas-eu.whitesourcesoftware.com/agent
     matrix:
@@ -106,6 +107,7 @@ public_scan_task:
   scan_script:
     - echo "Scan the ${PUBLIC_IMAGE_NAME}:${tag} image"
     - docker pull "${PUBLIC_IMAGE_NAME}:${tag}"
+    - .cirrus/pull.sh ${PUBLIC_IMAGE_NAME} ${tag} ${platform}
     - java -jar wss-unified-agent.jar -c .cirrus/wss-unified-agent.config -apiKey $MEND_API_KEY -product ${WS_PRODUCTNAME} -project ${PUBLIC_IMAGE_NAME}:${tag} -wss.url ${WS_WSS_URL} -docker.scanImages true
 
 multi_arch_test_task:

.cirrus/pull.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+IMAGE_NAME=${1}
+tag=${2}
+platform=${3}
+
+for i in $(seq 1 3); do
+    if docker pull --platform linux/"${platform}" "${IMAGE_NAME}:${tag}"; then
+        exit 0
+    fi
+    echo "[${i}/3] Retrying to pull image ${IMAGE_NAME}:${tag}..."
+    sleep 5
+done
+echo "[Error]: Failed to pull image ${IMAGE_NAME}:${tag}"
+exit 1