[BUG] JavaScript heap out of memory error on Raspberry Pi 3B+

[mezakos]

Environment

Self-Hosted (Docker)

Version

1.9.3

Describe the problem

I'm trying to run dashy on a Raspberry Pi 3B+ with docker. I'm using the lissy93/dashy:arm32v7 image. The container is not able to start up because during the yarn build process I get the following error:

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory

<--- Last few GCs --->

[61:0x2d535f0]   169058 ms: Mark-sweep 228.3 (231.3) -> 228.1 (231.5) MB, 2481.7 / 0.2 ms  (average mu = 0.272, current mu = 0.227) allocation failure scavenge might not succeed
[61:0x2d535f0]   171221 ms: Mark-sweep 228.5 (231.5) -> 228.3 (231.5) MB, 1480.5 / 0.3 ms  (average mu = 0.289, current mu = 0.316) allocation failure scavenge might not succeed


<--- JS stacktrace --->

==== JS stack trace =========================================

    0: ExitFrame [pc: 0x11c3560]
    1: StubFrame [pc: 0x115c400]
Security context: 0x43240469 <JSObject>
    2: /* anonymous */(aka /* anonymous */) [0x33393c25] [/app/node_modules/webpack-sources/lib/applySourceMap.js:~58] [pc=0x2c0ba204](this=0x4b440279 <undefined>,0x373d4f9d <String[13]: parentNode===>,0x546e506d <Object map = 0x30a9c69d>)
    3: walk(aka SourceNode_walk) [0x2999cac1] [/app/node_modules/source-map/lib/source-node.js:~...

error Command failed with signal "SIGABRT".
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
ERROR: "build-watch" exited with 1.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.```


### Additional info

_No response_

### Please tick the boxes

- [X] You are using a [supported](https://github.com/Lissy93/dashy/blob/master/.github/SECURITY.md#supported-versions) version of Dashy (check the first two digits of the version number)
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[mezakos]

I found a workaround: I added -e NODE_OPTIONS='--max-old-space-size=2048' and it worked. I'm also using ZRAM. Thanks for the awesome software!

[Lissy93]

Glad you've got it working :)
This is an issue, as initial build with Node causes the memory usage to spike on first compile/ and during auto updates if enabled. It's something I'm looking to address properly long term, but in the meantime I'll add your workaround to the docs :)

Feel free to reach out again if you find anything else that's not as expected :)