Use uniqueString(deployment().name) for revision suffix to ensure unique revisions per deployment

Author: tjementum

cloud-infrastructure/cluster/deploy-cluster.sh

@@ -49,6 +49,7 @@ else
 fi
 
 CURRENT_DATE=$(date +'%Y-%m-%dT%H-%M')
+export REVISION_SUFFIX=$(printf "%04x" $RANDOM | head -c 4)
 
 cd "$(dirname "${BASH_SOURCE[0]}")"
 

cloud-infrastructure/cluster/main-cluster.bicep

@@ -13,6 +13,7 @@ param backOfficeVersion string
 param applicationInsightsConnectionString string
 param communicationServicesDataLocation string = 'europe'
 param mailSenderDisplayName string = 'PlatformPlatform'
+param revisionSuffix string
 
 var storageAccountUniquePrefix = replace(clusterResourceGroupName, '-', '')
 var tags = { environment: environment, 'managed-by': 'bicep' }
@@ -244,6 +245,7 @@ module accountManagementWorkers '../modules/container-app.bicep' = {
     userAssignedIdentityName: accountManagementIdentityName
     ingress: true
     hasProbesEndpoint: false
+    revisionSuffix: revisionSuffix
     environmentVariables: accountManagementEnvironmentVariables
   }
 }
@@ -268,6 +270,7 @@ module accountManagementApi '../modules/container-app.bicep' = {
     userAssignedIdentityName: accountManagementIdentityName
     ingress: true
     hasProbesEndpoint: true
+    revisionSuffix: revisionSuffix
     environmentVariables: accountManagementEnvironmentVariables
   }
   dependsOn: [accountManagementWorkers]
@@ -370,6 +373,7 @@ module backOfficeWorkers '../modules/container-app.bicep' = {
     userAssignedIdentityName: backOfficeIdentityName
     ingress: true
     hasProbesEndpoint: false
+    revisionSuffix: revisionSuffix
     environmentVariables: backOfficeEnvironmentVariables
   }
 }
@@ -394,6 +398,7 @@ module backOfficeApi '../modules/container-app.bicep' = {
     userAssignedIdentityName: backOfficeIdentityName
     ingress: true
     hasProbesEndpoint: true
+    revisionSuffix: revisionSuffix
     environmentVariables: backOfficeEnvironmentVariables
   }
   dependsOn: [backOfficeWorkers]
@@ -438,6 +443,7 @@ module appGateway '../modules/container-app.bicep' = {
     hasProbesEndpoint: false
     domainName: domainName == '' ? '' : domainName
     external: true
+    revisionSuffix: revisionSuffix
     environmentVariables: [
       {
         name: 'AZURE_CLIENT_ID'

cloud-infrastructure/cluster/main-cluster.bicepparam

@@ -12,3 +12,4 @@ param appGatewayVersion = readEnvironmentVariable('APP_GATEWAY_VERSION')
 param accountManagementVersion = readEnvironmentVariable('ACCOUNT_MANAGEMENT_VERSION')
 param backOfficeVersion = readEnvironmentVariable('BACK_OFFICE_VERSION')
 param applicationInsightsConnectionString = readEnvironmentVariable('APPLICATIONINSIGHTS_CONNECTION_STRING')
+param revisionSuffix = readEnvironmentVariable('REVISION_SUFFIX')

cloud-infrastructure/modules/container-app.bicep

@@ -17,7 +17,7 @@ param hasProbesEndpoint bool
 param domainName string = ''
 param external bool = false
 param environmentVariables object[] = []
-param uniqueSuffix string = substring(newGuid(), 0, 4)
+param revisionSuffix string
 
 resource userAssignedIdentity 'Microsoft.ManagedIdentity/userAssignedIdentities@2024-11-30' existing = {
   scope: resourceGroup(clusterResourceGroupName)
@@ -57,8 +57,8 @@ var image = useQuickStartImage
   ? 'ghcr.io/platformplatform/quickstart:latest'
   : '${containerRegistryServerUrl}/${containerImageName}:${containerImageTag}'
 
-// Create a revisionSuffix that contains the version but is be unique for each deployment. E.g. "2024-4-24-1557-tzyb"
-var revisionSuffix = '${replace(containerImageTag, '.', '-')}-${substring(uniqueSuffix, 0, 4)}'
+// Create a revisionSuffix that contains the version and random suffix. E.g. "2025-11-19-756-a3f2"
+var fullRevisionSuffix = '${replace(containerImageTag, '.', '-')}-${revisionSuffix}'
 
 resource containerApp 'Microsoft.App/containerApps@2025-07-01' = {
   name: name
@@ -136,7 +136,7 @@ resource containerApp 'Microsoft.App/containerApps@2025-07-01' = {
               ]
         }
       ]
-      revisionSuffix: revisionSuffix
+      revisionSuffix: fullRevisionSuffix
       scale: {
         minReplicas: minReplicas
         maxReplicas: maxReplicas