New to Podman having some issues running successfully built image

[MrAmericanMike]

I'm having some issues figuring out what's wrong with what I'm doing.

I trying to create a container with a /server workdir, where I copy first a package.json file, then run npm install, then copy the rest of the contents. (Apparently doing so is better than just copy the whole contents)

You can check this setup in this repo: https://github.com/MrAmericanMike/podman

There you will find 2 Dockerfiles, one that works Dockerfile and one that doesn't Dockerfile-NO

The one that works, I don't copy the package.json file first before the rest of the content but copy the whole server directory, then run npm install

podman build -t podman-test .

STEP 1/8: FROM node:18.18.0-slim
STEP 2/8: WORKDIR "/server"
--> a5902ad9535
STEP 3/8: COPY ./server ./
--> ffc98654b11
STEP 4/8: RUN npm install

added 60 packages, changed 4 packages, and audited 65 packages in 10s

4 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities
npm notice
npm notice New major version of npm available! 9.8.1 -> 10.2.4
npm notice Changelog: <https://github.com/npm/cli/releases/tag/v10.2.4>
npm notice Run `npm install -g [email protected]` to update!
npm notice
--> c2910577e52
STEP 5/8: ENV NODE_ENV="production"
--> fda87525298
STEP 6/8: ENV PORT=3000
--> 7be1bfa135a
STEP 7/8: EXPOSE 3000
--> dc9154b0767
STEP 8/8: CMD [ "npm", "run", "start" ]
COMMIT podman-test
--> 6cab425e1d4
Successfully tagged localhost/podman-test:latest
6cab425e1d4ec2473111704834e1bbd7c726deaad9d2b289066d3d2e42c0aa7d

The one that doesn't work, seams to build ok.

podman build -t podman-test .
STEP 1/9: FROM node:18.18.0-slim
STEP 2/9: WORKDIR "/server"
--> b3f6f92d043
STEP 3/9: COPY ./server/package.json ./
--> 8633ec364b3
STEP 4/9: RUN npm install

added 64 packages, and audited 65 packages in 6s

4 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities
npm notice
npm notice New major version of npm available! 9.8.1 -> 10.2.4
npm notice Changelog: <https://github.com/npm/cli/releases/tag/v10.2.4>
npm notice Run `npm install -g [email protected]` to update!
npm notice
--> a624cda5d91
STEP 5/9: COPY ./server ./
--> 6dafcaa5fdd
STEP 6/9: ENV NODE_ENV="production"
--> f99d9684d6a
STEP 7/9: ENV PORT=3000
--> 1c56e36c282
STEP 8/9: EXPOSE 3000
--> 814c118fcdf
STEP 9/9: CMD [ "npm", "run", "start" ]
COMMIT podman-test
--> 4c61d6b3729
Successfully tagged localhost/podman-test:latest
4c61d6b3729bf5b2915fd98293320debdfe12741bc1f8e41b8bf9b165010fcef

However when I try to run it, I get this error.

 podman run -p 3000:3000 localhost/podman-test

> [email protected] start
> node src/main.js

node:internal/errors:496
    ErrorCaptureStackTrace(err);
    ^

Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'koa' imported from /server/src/main.js
    at new NodeError (node:internal/errors:405:5)
    at packageResolve (node:internal/modules/esm/resolve:890:9)
    at moduleResolve (node:internal/modules/esm/resolve:939:20)
    at defaultResolve (node:internal/modules/esm/resolve:1132:11)
    at nextResolve (node:internal/modules/esm/loader:163:28)
    at ESMLoader.resolve (node:internal/modules/esm/loader:835:30)
    at ESMLoader.getModuleJob (node:internal/modules/esm/loader:424:18)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/module_job:77:40)
    at link (node:internal/modules/esm/module_job:76:36) {
  code: 'ERR_MODULE_NOT_FOUND'
}

Node.js v18.18.0

What am I doing wrong here?