No package.json on docker

Question

I am creating a docker image of a react-app and it return me an error that:

no such file or directory, open '/package.json'

Notice created a lockfile as package-lock.json. You should commit this file.

Here the Dockerfile

FROM node:alpine
RUN npm install
RUN npm run build

Answer 1

In your Docker file you need to specify the COPY execution to send to the container before execute copy the package.json, modified your Docker file to be like this:

FROM node:alpine
COPY package.json .
RUN npm install --no-package-lock
COPY . .
RUN npm run build

COPY package.json .

This command is to copy your package.json to the new container

RUN npm install --no-package-lock

This one is to install all of the dependencies of your project on the new container

COPY . .

This on is to move all your code to the new container