Multi-Cloud Container Publishing with Dagger Functions

Publishing container images to different cloud registries should be easy, but in practice, it isn't. Differences in cloud provider APIs, security policies, access controls, and infrastructure add friction to building multi-cloud application delivery pipelines. Two new Dagger modules, aws-for-dagger and gcp-for-dagger, provide simple APIs to push container images to AWS Elastic Container Registry (ECR) and GCP Artifact Registry (GAR), automating authentication and permissions management. These modules are available in the Daggerverse and can be tried for oneself with specific account credentials and IAM policies. Dagger Functions enable reusing and combining existing modules to create a multi-cloud publishing function, pushing a container image to three cloud registries in one call. The power of Dagger Functions lies in their ability to reuse and combine modules, enabling complex tasks like multi-cloud publishing with minimal code. Each Dagger SDK generates native code-bindings for all dependencies, abstracting away GraphQL queries and providing benefits such as type-checking, code completion, and IDE features when developing Dagger Functions.