foobarbaz
Hi all,
I have a phoenix umbrella app that I build a docker container for using alpine and deploy via github actions. I was wondering if anyone knew a way I could build dependencies outside of the container so I can cache them?
Thanks!
Where Next?
Trending in Questions
Other Trending Topics
Latest Phoenix Threads
Latest on Elixir Forum
Sponsor Spotlight
Phoenix, LiveView, multimedia pipelines, distributed systems. 400 engineers, Elixir since 2017. Available for hire.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #library
- #deployment
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #elixirconf
- #channels
- #exunit
- #discussion
- #code-sync
- #podcasts
- #javascript
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #ai
- #elixirconf-us
- #blog-post
- #elixir-ls
- #phoenix_html
- #iex
- #graphql
- #genstage
- #websockets
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #api
- #forms
- #elixirconf-eu
- #metaprogramming
- #hex
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Elixir, Erlang & BEAM conferences from Code Sync - join us in 2026!
Bringing learning, work and compliance together since 1987.
Producing high quality Elixir screencasts since 2017.
The deployment platform built for Elixir: PaaS ease, VPS control.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
Showing Posts 1 to 3- Show Best Posts
- Show All (oldest first)
- Show All (newest first)
RudManusachi
Well, as long as OS is the same you can build dependencies on host system and
COPY deps .in Dockerfile. I’ve done that in the past in CircleCI when I had “build” job in the image with the same OS so I could cache that step in CircleCI and later pass to docker.foobarbaz
Yeah, that’s part of the problem, apologies if I wasn’t clear on that in the OP. Github Actions doesn’t provide for the ability to use alpine as a runner, so I’m stuck using ubuntu. However, I run the images in production on alpine because it’s much smaller. The main difference is Ubuntu uses GLibC whereas Alpine uses MUSL.
RudManusachi
BTW! Not related to the question, but still want to share
In our company we recently moved all services from alpine to fedora. Sure - the image size of the single particular image has grown for a couple of hundred MB. However, since we are running 80+ services in k8s cluster, those base OS layers of docker image are cached and reused between containers that run on the same server.
Regarding musl vs glibc: while for elixir services I didn’t notice any major difference - our ruby services got performance boost around 10-20% “for free” after moving to fedora.