✋｜help

Tell Nixpack to include public folder in build

YYoPassIt

9/7/2023

I have an Axum build on Rust that is are web socket chat rooms, which also serves static files. When I run the cargo locally everything is fine, but when I deploy to railway the routes all work fine, except for the static file route which I can only tell doesn't work because the Nixpack isn't placing the public folder within the directory. Do I need to manually build a Docker Image, and if so how do I get Railway to use my Docker Image instead of generating a new Image.

YYoPassIt

9/7/2023

N/A

BBrody

9/7/2023

are you sure you don't have that folder in a gitignore?

YYoPassIt

9/7/2023

yes all I had in the git ignore was target

BBrody

9/7/2023

are you using relative paths when you serve this folder?

YYoPassIt

9/7/2023

I placed the public folder in src as well as externally Well in rust its from the crate level so relative to the crate yes

BBrody

9/7/2023

looks like there's a chance nixpacks is running just the built binary in a slim image, so it's possible the public folder isn't being copied to the final image is it possible for you to just embed that folder into the binary?

YYoPassIt

9/7/2023

I believe thats the case. Its just html, css, and js so I have no idea

BBrody

9/7/2023

it's not clear to me on how to stop nixpacks from doing that, so I propose two options, embed the folder into the binary or write a dockerfile to deploy your app

YYoPassIt

9/7/2023

If railway detects a Docker File it will use it automatically?

BBrody

9/7/2023

yep!

YYoPassIt

9/7/2023

okay I'll get to it, by the way it may be wise to detech foldernames with static/public or other common static file folders and just load them into the build directory of the container

BBrody

9/7/2023

hey you know rust (I don't) so I'm sure that would be a welcome PR (nixpacks is rust)

YYoPassIt

9/7/2023

Lol I would love to but I'm not confident in my rust at all. This is actually my first project in it. Just trying to deploy and show it off.

BBrody

9/7/2023

fair enough

YYoPassIt

9/7/2023

But thanks.

BBrody

9/7/2023

https://github.com/railwayapp/nixpacks/blob/main/src/providers/rust.rs#L181 here's the logic for nixpacks on how it decides to run your binary in a slim image, maybe you can change some things around in your project to get it to stop running it in a slim image?

YYoPassIt

9/7/2023

Alright I'll give it a look. I don't mind making a docker image anyways, its not too hard.

BBrody

9/7/2023

Dockerfile*

YYoPassIt

9/7/2023

yes, that's what i meant Hey how do ports work with Nixpacks, do I just put any port as the env in the Dockerfile and will the Nixpack just be smart it enough to map it to the one they're supplying?

BBrody

9/7/2023

when using a dockerfile nixpacks is not used in anyway shape or form. you do not need to specify any port in the dockerfile, you only need to have your app listen on the auto generated PORT variable

YYoPassIt

9/7/2023

Well I just gave it 3000 and exposed 3000 and railway figured it out. It works now. https://wscr-rust-axum-production.up.railway.app/ // in case you would like to look

BBrody

9/7/2023

did you set a PORT variable in the service variables?

YYoPassIt

9/7/2023

FROM rust:1.72-alpine AS build

WORKDIR /app

COPY . .

RUN apk add --no-cache musl-dev openssl-dev
RUN cargo build --release

COPY ./public ./public

RUN cargo install --path .
RUN cargo build --release

ENV PORT=3000
EXPOSE 3000

CMD ["./target/release/wscr"]

FROM rust:1.72-alpine AS build

WORKDIR /app

COPY . .

RUN apk add --no-cache musl-dev openssl-dev
RUN cargo build --release

COPY ./public ./public

RUN cargo install --path .
RUN cargo build --release

ENV PORT=3000
EXPOSE 3000

CMD ["./target/release/wscr"]

This all I've done. It just works, locally i need to -p port foward it to my computer which is what I thought would be needed to configure it with Railway but it just works

BBrody

9/7/2023

YYoPassIt

9/7/2023

What are service variables Like in railway the environment?

BBrody

9/7/2023

nvm, glad its working!

YYoPassIt

9/7/2023

Lol, I didn't set any config in railway. Just deployed it. One click per say.