SSG optimization
Hi! I’m looking for recommendations on how to setup a docker image that would be capable of running the static site generation. Currently I have moved the necessary dependencies under “dependencies” and everything thats not needed for generate under “devDependencies” in package.json.
After running pnpm install —frozen-lockfile —prod in Dockerfile and using the node image as a base I get a 1 gig image.. Generate works, but the image size is huge.
Are there any other recommendations on how to reduce the image size further?
3 Replies
Hi @Spreizu. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
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To optimize your Docker image for static site generation (SSG) with Nuxt and reduce its size, here are some recommendations based on the provided knowledge sources:
1. Use a multi-stage build: This approach can significantly reduce the final image size. You can create separate stages for dependencies, building, and the final runtime as shown in this Dockerfile example (https://nitro.unjs.io/deploy/providers/koyeb#using-a-docker-container).
2. Use a smaller base image: Instead of the full Node image, consider using the Alpine variant, which is much smaller. For example,
FROM node:18-alpine AS base as used in the Dockerfile example (https://nitro.unjs.io/deploy/providers/koyeb#using-a-docker-container).
3. Optimize your .dockerignore file: Ensure you're not copying unnecessary files into your Docker image. Here's an example of a good .dockerignore file (https://nitro.unjs.io/deploy/providers/koyeb#using-a-docker-container) that excludes non-essential files and directories.
4. Leverage tree-shaking: Nuxt 3 and Vue 3 have improved tree-shaking capabilities, which can help reduce your bundle size. As mentioned in the documentation (https://nuxt.com/docs/guide/concepts/vuejs-development#smaller-bundle), "most of Vue's functionality, including template directives and built-in components, is tree-shakable."
5. Consider using the nitro.static option: When building your Nuxt application, you can use the nitro.static option or run nuxt build --prerender to prerender your pages, which can potentially reduce the size of your server bundle as mentioned in the prerendering documentation (https://nuxt.com/docs/getting-started/prerendering).
6. Compress assets: Enable asset compression in your Nitro configuration. This can reduce the size of your static assets as described in the Nitro documentation (https://nitro.unjs.io/config#compresspublicassets).
7. Use docker buildx build: As mentioned in a Stack Overflow answer, switching from docker build to docker buildx build helped resolve build issues and potentially optimize the build process (https://stackoverflow.com/questions/77517718).
Remember to test your optimized Docker image thoroughly to ensure it still functions correctly after implementing these optimizations. If you need more specific guidance, you may want to share your current Dockerfile and Nuxt configuration for more tailored recommendations.
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Maybe there’s some way to manually initiate a prerender on a much smaller node_modules footprint, but still get the static files (html and payload)?