There's no need to run the prisma generate command that is executed on installation of the @prisma/client.

EDIT: https://www.prisma.io/docs/reference/tools-and-interfaces/prisma-client/generating-prisma-client

I know that this has been marked as solved, but I just wanted to share my setup for anyone interested.

Dockerfile

# Build image
FROM node:16.13-alpine as builder
WORKDIR /app

# Not sure if you will need this
# RUN apk add --update openssl

COPY package*.json ./
RUN npm ci --quiet

COPY ./prisma prisma
COPY ./src src
RUN npm run build

# Production image

FROM node:16.13-alpine
WORKDIR /app
ENV NODE_ENV production

COPY package*.json ./
RUN npm ci --only=production --quiet

COPY --chown=node:node --from=builder /app/prisma /app/prisma
COPY --chown=node:node --from=builder /app/src /app/src

USER node

EXPOSE 8080
CMD ["node", "src/index.js"]

package.json

{
  "name": "example",
  "description": "",
  "version": "0.1.0",
  "scripts": {
    "generate": "npx prisma generate",
    "deploy": "npx prisma migrate deploy",
    "dev": "npm run generate && nodemon --watch \"src/**\" --ext \"js,json\" --exec \"node src/index.js\"",
    "build": "npm run generate",
    "start": "npm run build && node build/index.js"
  },
  "prisma": {
    "schema": "prisma/schema.prisma"
  },
  "dependencies": {
    "@prisma/client": "^3.6.0"
  },
  "devDependencies": {
    "@tsconfig/node16": "^1.0.2",
    "@types/node": "^16.11.12",
    "nodemon": "^2.0.15",
    "prisma": "^3.6.0"
  }
}

I run this in Kubernetes. To make things smooth with database and migrations I run an initContainer that runs the prisma migrate deploy.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: EXAMPLE
spec:
  replicas: 1
  selector:
    matchLabels:
      app: EXAMPLE
  strategy:
    rollingUpdate:
      maxSurge: 100%
      maxUnavailable: 0
    type: RollingUpdate
  template:
    metadata:
      labels:
        app: EXAMPLE
    spec:
      containers:
        image: DOCKER_IMAGE
        imagePullPolicy: IfNotPresent
        name: SERVICE_NAME
        ports:
        - containerPort: 8080
          name: http
          protocol: TCP
      initContainers:
      - command:
        - npm
        - run
        - deploy
        image: DOCKER_IMAGE
        imagePullPolicy: IfNotPresent
        name: database-migrate-deploy

(This is a live service I just copied and stripped away anything non essential)

I hope this could be of use to someone