Dagger vs Jib

Dagger is a software stack for continuous integration built around an API, executable code, and a portable DAG execution engine. Pipeline logic can run locally or in Dagger Cloud, with automatic caching and end-to-end tracing. Cloud Checks connect a GitHub repository to Dagger Cloud and run checks on Cloud Engines after events such as pushes or pull requests, without a CI workflow file. Official modules cover testing, linting, formatting, type checking, browser tests, and Helm chart validation, and can be extended in a user's preferred language. The CLI has installation instructions for macOS, Linux, and Windows, and the documentation includes a self-hosting guide. Individual is free and allows one user, 1,000,000 monthly events, one month of run history, and community support. Team costs $50 a month after a two-week trial, for up to 10 users, 10,000,000 monthly events, one year of run history, and email support. Enterprise pricing is custom; SSO and managed single-tenant deployment are contact items. The site links to security and compliance information.

Jib builds Docker and OCI images for Java applications without a Docker daemon. It can be used as a Maven or Gradle plugin, a Java library, or a command-line interface, and runs on Linux, macOS, and Windows. Jib divides application contents into layers, allowing code changes to be rebuilt without rebuilding the whole image. It can push images to a container registry of the user's choice, uses an OpenJDK base image by default, and accepts a custom base image. The project says that rebuilding an image from the same contents produces the same image. It supports local build caches and multi-architecture builds, and the project says it works well with Google Cloud Build. Examples cover Spring Boot, Micronaut, multi-module projects, and Spark Java with a Java Agent. Jib is free and open source under Apache License, Version 2.0. The project is not an officially supported Google product; it directs usage questions to Stack Overflow and also links to GitHub issues and a FAQ.