Question

Passing environment variables during build with dockerfile + sveltekit + vite

Posted on August 22, 2024
Deployment
Asked by Marcin Moldrzyk

I’m trying to deploy my app on digitalocean and i’m have couple env variables im trying to use. I have added them in the settings of my app to the App-Level Environment Variables. However during build i see:


[2024-08-22 16:00:24] │ ✓ 203 modules transformed.
[2024-08-22 16:00:24] │ x Build failed in 1.68s
[2024-08-22 16:00:24] │ error during build:
[2024-08-22 16:00:24] │ src/lib/meilisearch/index.ts (1:30): "MEILISEARCH_HOST" is not exported by "virtual:$env/static/private", imported by "src/lib/meilisearch/index.ts".
[2024-08-22 16:00:24] │ file: /app/src/lib/meilisearch/index.ts:1:30
[2024-08-22 16:00:24] │ 
[2024-08-22 16:00:24] │ 1: import { MEILISEARCH_API_KEY, MEILISEARCH_HOST } from "$env/static/private";
[2024-08-22 16:00:24] │                                  ^
[2024-08-22 16:00:24] │ 2: import { Meilisearch } from "meilisearch";
[2024-08-22 16:00:24] │ 
[2024-08-22 16:00:24] │     at getRollupError (file:///app/node_modules/rollup/dist/es/shared/parseAst.js:392:41)
[2024-08-22 16:00:24] │     at error (file:///app/node_modules/rollup/dist/es/shared/parseAst.js:388:42)
[2024-08-22 16:00:24] │     at Module.error (file:///app/node_modules/rollup/dist/es/shared/node-entry.js:13958:16)
[2024-08-22 16:00:24] │     at Module.traceVariable (file:///app/node_modules/rollup/dist/es/shared/node-entry.js:14406:29)
[2024-08-22 16:00:24] │     at ModuleScope.findVariable (file:///app/node_modules/rollup/dist/es/shared/node-entry.js:12110:39)
[2024-08-22 16:00:24] │     at Identifier.bind (file:///app/node_modules/rollup/dist/es/shared/node-entry.js:6941:40)
[2024-08-22 16:00:24] │     at Property.bind (file:///app/node_modules/rollup/dist/es/shared/node-entry.js:4808:23)
[2024-08-22 16:00:24] │     at ObjectExpression.bind (file:///app/node_modules/rollup/dist/es/shared/node-entry.js:4804:28)
[2024-08-22 16:00:24] │     at NewExpression.bind (file:///app/node_modules/rollup/dist/es/shared/node-entry.js:4804:28)
[2024-08-22 16:00:24] │     at VariableDeclarator.bind (file:///app/node_modules/rollup/dist/es/shared/node-entry.js:4808:23)
[2024-08-22 16:00:24] │ error building image: error building stage: failed to execute command: waiting for process to exit: exit status 1
[2024-08-22 16:00:24] │ 
[2024-08-22 16:00:24] │ command exited with code 1
[2024-08-22 16:00:24] │ 
[2024-08-22 16:00:24] │  ✘ build failed

i tried modyfing my dockerfile by adding:

ENV MEILISEARCH_API_KEY=$MEILISEARCH_API_KEY ENV MEILISEARCH_HOST=$MEILISEARCH_HOST …

etc.

however that doesn’t work, i also tried to define those as ARG to have them accessible during build but no luck there either.

Can someone help me?

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Bobby Iliev

Site Moderator

• August 23, 2024

Hey!

I think that when using SvelteKit with Vite, environment variables used during the build need to be prefixed with VITE_ if they are to be accessible in the client-side code.

Here’s what you can do:

Instead of using MEILISEARCH_API_KEY and MEILISEARCH_HOST, rename them to VITE_MEILISEARCH_API_KEY and VITE_MEILISEARCH_HOST in your DigitalOcean App Platform settings.
In your code, import these variables using import.meta.env.VITE_MEILISEARCH_API_KEY and import.meta.env.VITE_MEILISEARCH_HOST.

Also as a side note, to pass environment variables to a Dockerfile-based resource, define them as build-time or run-time environment variables in App Platform. This passes variables down to the docker build process (with a --build-arg parameter) and docker run process (with an -e parameter) when App Platform builds and deploys your container. You can then access the values of the environment variables using the ARG keyword in your Dockerfile as you normally would.

Let me know how it goes.

- Bobby