Azure Container Registry Agent Skill

Azure Container Registry Skill

This skill provides expert guidance for Azure Container Registry. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

How to Use This Skill

> IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g., L35-L120), use read_file with the specified lines. For categories with file links (e.g., security.md), use read_file on the linked reference file

> IMPORTANT for Agent: If metadata.generated_at is more than 3 months old, suggest the user pull the latest version from the repository. If mcp_microsoftdocs tools are not available, suggest the user install it: Installation Guide

This skill requires network access to fetch documentation content:

• Preferred: Use mcp_microsoftdocs:microsoft_docs_fetch with query string from=learn-agent-skill. Returns Markdown.
• Fallback: Use fetch_webpage with query string from=learn-agent-skill&accept=text/markdown. Returns Markdown.

Category Index

| Category | Lines | Description |

|----------|-------|-------------|

| Troubleshooting | L37-L52 | Diagnosing and fixing ACR issues: health checks, error codes, login/auth, network, performance, transfer, logs, artifact cache/streaming, Arc extension, and customer-managed keys. |

| Best Practices | L53-L60 | Best practices for ACR operations: managing public image dependencies, safe image deletion and storage cleanup, and robust image tagging/versioning strategies. |

| Decision Making | L61-L67 | Guidance on choosing ACR auth for Kubernetes, migrating image signing from Docker Content Trust to Notary, and planning/configuring geo-replication for multi-region registries. |

| Architecture & Design Patterns | L68-L73 | Patterns for ACR performance and governance: caching image pulls, geo-replication strategies, connected registries for edge/offline, and gated import workflows for public images. |

| Limits & Quotas | L74-L79 | Details on ACR SKUs (Basic/Standard/Premium) feature differences, performance and throughput limits, and how image storage capacity and quotas are calculated and enforced. |

| Security | L80-L118 | Securing ACR access: auth methods (Entra, managed identity, tokens), RBAC/ABAC, network/firewall/VNet rules, policy/compliance, encryption keys, image signing/verification, and Defender scanning. |

| Configuration | L119-L138 | Configuring ACR behavior: cache and wildcard rules, purge/locks/soft delete, retention and IPv6, tasks (YAML, timers, agent pools, patching), webhooks, and monitoring metrics/logs. |

| Integrations & Coding Patterns | L139-L155 | Integrating ACR with Kubernetes, ACI, GitHub Actions, Helm, ORAS, and ACR Transfer; configuring auth, caching, webhooks, and image signing/verification workflows. |

| Deployment | L156-L160 | Using ARM templates to automate ACR quick tasks and data transfer, and deploying/managing ACR connected registries via Azure Arc extension |

Troubleshooting

| Topic | URL |

|-------|-----|

| Run az acr check-health for quick ACR diagnostics | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-check-health |

| Troubleshoot common Azure Container Registry issues | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-faq |

| Interpret az acr check-health error codes and fixes | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-health-error-reference |

| View and manage Azure Container Registry task run logs | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tasks-logs |

| Troubleshoot Azure Container Registry Transfer issues | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-transfer-troubleshooting |

| Troubleshoot Azure Container Registry network connectivity | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-troubleshoot-access |

| Troubleshoot ACR login, authentication, and authorization issues | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-troubleshoot-login-authn-authz |

| Troubleshoot Azure Container Registry performance problems | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-troubleshoot-performance |

| Troubleshoot Azure Container Registry artifact cache issues | https://learn.microsoft.com/en-us/azure/container-registry/troubleshoot-artifact-cache |

| Diagnose and fix Azure Container Registry artifact streaming issues | https://learn.microsoft.com/en-us/azure/container-registry/troubleshoot-artifact-streaming |

| Troubleshoot connected registry Arc extension issues | https://learn.microsoft.com/en-us/azure/container-registry/troubleshoot-connected-registry-arc |

| Troubleshoot customer-managed keys in Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/tutorial-troubleshoot-customer-managed-keys |

Best Practices

| Topic | URL |

|-------|-----|

| Manage public image dependencies using ACR | https://learn.microsoft.com/en-us/azure/container-registry/buffer-gate-public-content |

| Follow operational best practices for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-best-practices |

| Delete ACR images safely to manage registry storage | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-delete |

| Apply image tagging and versioning best practices in ACR | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-image-tag-version |

Decision Making

| Topic | URL |

|-------|-----|

| Select Kubernetes authentication options for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/authenticate-kubernetes-options |

| Migrate ACR signing from DCT to Notary Project | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-content-trust-deprecation |

| Plan and configure geo-replication for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-geo-replication |

Architecture & Design Patterns

| Topic | URL |

|-------|-----|

| Design and use connected registries with ACR | https://learn.microsoft.com/en-us/azure/container-registry/intro-connected-registry |

| Implement gated import workflow for public images in ACR | https://learn.microsoft.com/en-us/azure/container-registry/tasks-consume-public-content |

Limits & Quotas

| Topic | URL |

|-------|-----|

| Compare Azure Container Registry SKU features and limits | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-skus |

| Review Azure Container Registry image storage limits | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-storage |

Security

| Topic | URL |

|-------|-----|

| Allow trusted Azure services to access network-restricted ACR | https://learn.microsoft.com/en-us/azure/container-registry/allow-access-trusted-services |

| Enable anonymous pull access for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/anonymous-pull-access |

| Configure cross-tenant AKS authentication to Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/authenticate-aks-cross-tenant |

| Restrict Azure Container Registry public access by IP rules | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-access-selected-networks |

| Use Microsoft Entra service principals to access ACR | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-auth-service-principal |

| Choose and configure authentication methods for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-authentication |

| Configure managed identity authentication to Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-authentication-managed-identity |

| Use Azure Policy to audit ACR compliance | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-azure-policy |

| Configure Microsoft Entra Conditional Access policies for ACR | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-configure-conditional-access |

| Enable Docker Content Trust for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-content-trust |

| Use dedicated data endpoints to secure ACR traffic | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-dedicated-data-endpoints |

| Control accepted Microsoft Entra auth scopes for ACR | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-disable-authentication-as-arm |

| Configure firewall rules for Azure Container Registry access | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-firewall-rules |

| Configure Azure ABAC repository permissions in Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-rbac-abac-repository-permissions |

| Reference for Azure Container Registry built-in RBAC roles | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-rbac-built-in-roles-directory-reference |

| Assign and manage ACR RBAC built-in roles | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-rbac-built-in-roles-overview |

| Create and assign custom RBAC roles for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-rbac-custom-roles |

| Use Azure Container Registry service tags for network rules | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-service-tag |

| Access Key Vault secrets from ACR Tasks via managed identity | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tasks-authentication-key-vault |

| Configure managed identity for ACR Tasks | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tasks-authentication-managed-identity |

| Use managed identity for cross-registry auth in ACR Tasks | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tasks-cross-registry-authentication |

| Configure token-based repository permissions in Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-token-based-repository-permissions |

| Sign ACR images with CA certs via Key Vault | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tutorial-sign-trusted-ca |

| Enforce AKS image signature verification with Ratify | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tutorial-verify-with-ratify-aks |

| Restrict ACR access with virtual network service endpoints | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-vnet |

| Disable artifact export to prevent ACR data exfiltration | https://learn.microsoft.com/en-us/azure/container-registry/data-loss-prevention |

| Manage ACR Tasks network bypass policy with trusted services | https://learn.microsoft.com/en-us/azure/container-registry/manage-network-bypass-policy-for-tasks |

| Reference of built-in Azure Policy definitions for ACR | https://learn.microsoft.com/en-us/azure/container-registry/policy-reference |

| Configure client tokens to pull from connected registries | https://learn.microsoft.com/en-us/azure/container-registry/pull-images-from-connected-registry |

| Scan ACR images with Microsoft Defender for Cloud | https://learn.microsoft.com/en-us/azure/container-registry/scan-images-defender |

| Apply Azure Policy compliance controls to ACR | https://learn.microsoft.com/en-us/azure/container-registry/security-controls-policy |

| Secure connected registry Arc extension deployments | https://learn.microsoft.com/en-us/azure/container-registry/tutorial-connected-registry-arc |

| Configure customer-managed encryption keys for ACR | https://learn.microsoft.com/en-us/azure/container-registry/tutorial-customer-managed-keys |

| Enable customer-managed keys on Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/tutorial-enable-customer-managed-keys |

| Rotate and revoke customer-managed keys for ACR | https://learn.microsoft.com/en-us/azure/container-registry/tutorial-rotate-revoke-customer-managed-keys |

Configuration

| Topic | URL |

|-------|-----|

| Configure artifact cache in ACR using Azure CLI | https://learn.microsoft.com/en-us/azure/container-registry/artifact-cache-cli |

| Configure and run acr purge for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-auto-purge |

| Reference Azure Container Registry endpoint types and flags | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-endpoint-reference |

| Configure delete locks on ACR images and repositories | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-image-lock |

| Enable IPv6 dual-stack endpoints for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-ipv6-dual-stack |

| Configure retention policy for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-retention-policy |

| Configure and use ACR soft delete retention policy | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-soft-delete-policy |

| Use multi-step ACR Tasks to build, test, and patch images | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tasks-multi-step |

| YAML schema reference for Azure Container Registry Tasks | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tasks-reference-yaml |

| Schedule Azure Container Registry Tasks with timers | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tasks-scheduled |

| Configure multi-step ACR Tasks for build workflows | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tutorial-multistep-task |

| Webhook payload schema for Azure Container Registry events | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-webhook-reference |

| Configure continuous patching for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/how-to-continuous-patching |

| Monitoring metrics and logs reference for Azure Container Registry | https://learn.microsoft.com/en-us/azure/container-registry/monitor-container-registry-reference |

| Configure dedicated agent pools for ACR Tasks | https://learn.microsoft.com/en-us/azure/container-registry/tasks-agent-pools |

| Configure wildcard rules for ACR artifact cache | https://learn.microsoft.com/en-us/azure/container-registry/wildcards-artifact-cache |

Integrations & Coding Patterns

| Topic | URL |

|-------|-----|

| Configure ACR-to-ACR artifact caching with managed identity | https://learn.microsoft.com/en-us/azure/container-registry/artifact-cache-acr-to-acr-cli |

| Grant Azure Container Instances access to ACR with service principals | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-auth-aci |

| Create Kubernetes pull secrets for Azure Container Registry access | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-auth-kubernetes |

| Host and manage Helm chart repositories in ACR | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-helm-repos |

| Manage OCI and supply chain artifacts in ACR with ORAS | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-manage-artifact |

| Build images with Buildpacks using az acr pack build | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tasks-pack-build |

| Automate ACR Transfer using ARM templates | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-transfer-arm-template |

| Use ACR Transfer with Azure CLI extension | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-transfer-cli |

| Build, push, and sign ACR images in GitHub Actions with Notation | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tutorial-github-sign-notation-artifact-signing |

| Verify signed ACR images in GitHub Actions workflows | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tutorial-github-verify-notation-artifact-signing |

| Sign ACR images with Notation using Azure Key Vault certificates | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tutorial-sign-build-push |

| Sign and verify ACR images using Notation and Artifact Signing | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tutorial-sign-verify-notation-artifact-signing |

| Configure ACR webhooks for registry event notifications | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-webhook |

Deployment

| Topic | URL |

|-------|-----|

| Queue ACR quick task runs with ARM templates | https://learn.microsoft.com/en-us/azure/container-registry/container-registry-task-run-template |

| Deploy the ACR connected registry Arc extension | https://learn.microsoft.com/en-us/azure/container-registry/quickstart-connected-registry-arc-cli |