# Dagger 43 Hacker News commenters recommended Dagger and 23 criticized it, November 2025 to November 2026. It was recommended in 10 of 13 months. **Verdict:** Recommended for running the same CI pipelines locally and in any CI environment, with strong caching and container layers. Common caveat: weak API stability and documentation. ## Why people recommend it - Strong caching and reproducible builds (5 comments): "Dagger's current caching implementation is very much built around there being a single long-lived node and doesn't scale out well" ([source](https://news.ycombinator.com/item?id=47240600)) "There's no reason you shouldn't be able to get precise cache invalidation in a large monorepo." ([source](https://news.ycombinator.com/item?id=46265085)) "the whole point of using Dagger in this setup is to get tests caching out of the box" ([source](https://news.ycombinator.com/item?id=47206980)) - Agent sandboxes with shell access (5 comments): "My favorite features are powered by Dagger, sandbox with time travel, forking, jump into shell at any turn, diff between any points." ([source](https://news.ycombinator.com/item?id=47854555)) "brings a number of capabilities like being able to drop into a shell in the same environment" ([source](https://news.ycombinator.com/item?id=47678936)) "I am now implementing environments for agents based on container layers and Dagger, which unlocks the ability to cheaply and reproducible clone what one agent was doing" ([source](https://news.ycombinator.com/item?id=46236326)) - Same pipeline locally and in CI (4 comments): "Being able to run the exact same pipeline locally and in any CI environment is the most compelling feature of dagger." ([source](https://news.ycombinator.com/item?id=47245368)) "local-first (local execution should be a first-class citizen, with no exception)" ([source](https://news.ycombinator.com/item?id=46619043)) "It's an open-source CI platform that decouples the runtime from the triggers." ([source](https://news.ycombinator.com/item?id=48111965)) - Replaces brittle CI YAML and bash (4 comments): "Dagger has been a godsend in helping me cope with the unending misery that is GitHub Actions." ([source](https://news.ycombinator.com/item?id=46734833)) "Works fine for us for glueing a bunch of CI steps together which would've been a pile of bash otherwise." ([source](https://news.ycombinator.com/item?id=46265031)) "It serves a place where a dockerfile is not enough, and CI workflows are too difficult to debug or reason about." ([source](https://news.ycombinator.com/item?id=46267498)) ## What people warn about - Poor documentation and unstable API (2 comments): "Overall I like Dagger conceptually, but I wish they'd start focusing more on API stability and documentation" ([source](https://news.ycombinator.com/item?id=46263040)) "I've also looked at Dagger and been quite disappointed with it (and their terrible documentation)." ([source](https://news.ycombinator.com/item?id=46262846)) - Hard migration and added complexity (3 comments): "I tried to convert one of our Actions workflows and that proved to be a PITA that I gave up on" ([source](https://news.ycombinator.com/item?id=46306293)) "I found the migration challenging because it's the heavy tool with its quirks." ([source](https://news.ycombinator.com/item?id=50232672)) "adds complexity to something I can already do with a Dockerfile and bash" ([source](https://news.ycombinator.com/item?id=46263326)) ## Alternatives hackers recommend - [GitHub Actions](https://hackerapproved.com/p/github-actions.md): 234 recommend - [Jenkins](https://hackerapproved.com/p/jenkins.md): 67 recommend - [GitLab CI](https://hackerapproved.com/p/gitlab-ci.md): 56 recommend - [Woodpecker CI](https://hackerapproved.com/p/woodpecker-ci.md): 37 recommend - [Buildkite](https://hackerapproved.com/p/buildkite.md): 33 recommend ## Cite as Hacker Approved, "Dagger", https://hackerapproved.com/p/dagger/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).