is it installed in the dependencies or the dev dependencies

Dependencies

is your lock file in sync

Should be

```## build runner
FROM node:lts-alpine as build-runner

Set temp directory

WORKDIR /tmp/app

Move package.json

COPY package.json .

Install dependencies

RUN yarn install

Move source files

COPY src ./src
COPY tsconfig.json .
COPY prisma ./prisma

Generate Prisma Client

RUN npx prisma generate

Build project

RUN yarn run build

production runner

FROM node:lts-alpine as prod-runner

Set work directory

WORKDIR /app

Copy package.json from build-runner

COPY --from=build-runner /tmp/app/package.json /app/package.json

Move build files

COPY --from=build-runner /tmp/app/build /app/build

Start bot

CMD [ "yarn", "run", "start" ]
```

My Dockerfile

try utilizing a lock file and install from the lock file

So I should try sending my yarn.lock together?

not sure what you mean by sending

Commiting together

your lock file should definitely be in your repo, and used to install the dependencies from

Let me try

are you sure railway is using your Dockerfile?

Yes

Not sure if it's using right

there's just some simple config issue somewhere with your project

Even with the yarn.lock file still the same error

please show me the updated dockerfile

Still the same

please see my message, this requires you to change the dockerfile a little bit

```## build runner
FROM node:lts-alpine as build-runner

Set temp directory

WORKDIR /tmp/app

Move package.json and yarn.lock

COPY package.json yarn.lock ./

Install dependencies

RUN yarn install

Move source files

COPY src ./src
COPY tsconfig.json .
COPY prisma ./prisma

Generate Prisma Client

RUN npx prisma generate

Build project

RUN yarn run build

production runner

FROM node:lts-alpine as prod-runner

Set work directory

WORKDIR /app

Copy package.json from build-runner

COPY --from=build-runner /tmp/app/package.json /app/package.json
COPY --from=build-runner /tmp/app/yarn.lock /app/yarn.lock

Move build files

COPY --from=build-runner /tmp/app/build /app/build

Start bot

CMD [ "yarn", "run", "start" ]
```

What else should I change?

install from the lock file

I don't know how to do that to be honest

Tried RUN yarn install --frozen-lockfile

that is what you would want to be using in a production environment

And what should I use now?

exactly what you just sent

```## build runner
FROM node:lts-alpine as build-runner

Set temp directory

WORKDIR /tmp/app

Move package.json and yarn.lock

COPY package.json yarn.lock ./

Install dependencies

RUN yarn install --frozen-lockfile

Move source files

COPY src ./src
COPY tsconfig.json .
COPY prisma ./prisma

Generate Prisma Client

RUN npx prisma generate

Build project

RUN yarn run build

production runner

FROM node:lts-alpine as prod-runner

Set work directory

WORKDIR /app

Copy package.json from build-runner

COPY --from=build-runner /tmp/app/package.json /app/package.json
COPY --from=build-runner /tmp/app/yarn.lock /app/yarn.lock

Move build files

COPY --from=build-runner /tmp/app/build /app/build

Start bot

CMD [ "yarn", "run", "start" ]
```

please update your dockerfile with this

Still giving the same error

locally, delete your node_modules and then run yarn install --frozen-lockfile and start your project

Now what?

No errors

what node version are you using locally

20.11.0

what version of node is node:lts-alpine

I'm not sure, I think it's the last one available

its 20.13.1

So I might need to define the node version?

try using node:20.11.0-alpine

in your dockerfile, run a prune and then copy the node_modules folder into the final layer

You mean
COPY --from=build-runner /tmp/app/node_modules /app/node_modules?

please take everything i said in this message into account

Working fine now @Brody

Thank you so much

no problem