Why is my svelte app runs on localhost but NOT on AWS Lightsail?

[kstcovflw]

TL;DR
I have a Dockerized svelte app that works on localhost but NOT on AWS Lightsail.

I have a Dockerized Svelte application that runs perfectly on my local machine, but I’m having trouble deploying it on AWS Lightsail. Here’s what I’ve done so far:

Error

Log

[3/Jul/2024:08:42:00] [deployment:1] Creating your deployment
[3/Jul/2024:08:42:13] exec /usr/local/bin/docker-entrypoint.sh: exec format error
[3/Jul/2024:08:43:02] [deployment:1] Started 1 new node
[3/Jul/2024:08:43:18] exec /usr/local/bin/docker-entrypoint.sh: exec format error
[3/Jul/2024:08:44:13] [deployment:1] Started 1 new node
[3/Jul/2024:08:44:22] exec /usr/local/bin/docker-entrypoint.sh: exec format error
[3/Jul/2024:08:45:27] [deployment:1] Started 1 new node
[3/Jul/2024:08:45:44] exec /usr/local/bin/docker-entrypoint.sh: exec format error
[3/Jul/2024:08:46:02] [deployment:1] Canceled

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Lightsail Container settings

• Created a container service on Lightsail.
• Added a container with the following details:
  • Container name: frontend
  • feed Image from ECR
• Set the PUBLIC ENDPOINT to use port :3000.

Dockerfile

FROM node:18-alpine AS builder
WORKDIR /app
COPY package*.json .
RUN npm ci
COPY . .
RUN npm run build
RUN npm prune --production

FROM node:18-alpine
WORKDIR /app
COPY --from=builder /app/build build/
COPY --from=builder /app/node_modules node_modules/
COPY package.json .
EXPOSE 3000 # <--- I thought this would work
ENV NODE_ENV=production
CMD [ "node", "build" ]

---

Docker Desktop setup

When I run docker image on local machine, it will work without any issue.

I can access it from localhost:3000 or localhost if i change port to :80

---

Docker Desktop uses tcp, so i thought that was a reason why i had this issue, but I am not able to add :3000 tcp as Public Endpoint.

Update

I tested out with sveltekit app without any code modification (Skelton project). With Sveltkit dockerfile setup reference. So, i didn't have any env variable set on Lightsail.

Has anyone encountered the same error?

[kstcovflw]

It made Docker image on Macbook, and this happened but not on my Linux.

Basically caused by the differnce on architecute when you create Docker Image. Mac: ARM64, Linux: x86_64. Lightsail is based on x86_64