CODEWITHSUNDEEP
node.jsangulardocker
Lucas Batista
Lucas Batista

Reputation: 143

How to solve the error in package.json when creating an image?

In the step 4/6 is showing up an error when I try to create this image in Docker:

FROM node:latest

RUN mkdir -p /app/src

WORKDIR /app/src

COPY package.json .

RUN npm install
#IT WILL COPY THE ENTIRE DIR FORECAST TO /app/src INSIDE DOCKER
COPY . .

EXPOSE 3000

CMD {"npm",  "start"}

the error that shows is:

=> ERROR [4/6] COPY package.json .                                                                                0.0s
------
 > [4/6] COPY package.json .:
------
failed to compute cache key: "/package.json" not found: not found

Upvotes: 13

Views: 13315

Answers (6)

Amartya Sinha
Amartya Sinha

Reputation: 1

Check your dockerignore file once, I added package*.json in dockerignore file, that's why it wasn't able to find the file.

Upvotes: 0

Philipp Stephan
Philipp Stephan

Reputation: 392

For me the package-lock.json was a dead symlink, pointing to a non-existent file. When the builder resolved the symlink, the hash could not be computed because the file did not exist. Updating the symlink to reference the correct file solved the issue

Upvotes: 0

Azzabi Haythem
Azzabi Haythem

Reputation: 2413

I got the same error when i set Dockerfile and package.json in the same file, for me it was solved by adding "**/" to the path of the json file like this

    FROM node:14.17.3-alpine AS build
    WORKDIR /usr/src/app
    COPY **/package.json **/package-lock.json ./
    ...

Upvotes: 7

www
www

Reputation: 41

check the path of package.json, note the package.json relative to the dockerfile's path

Upvotes: 4

Evgeni Lilov
Evgeni Lilov

Reputation: 339

You can try:

COPY ["package*.json","./"]

Upvotes: 13

VivekDev
VivekDev

Reputation: 25457

I was getting a similar error.

failed to compute cache key: "/package.json" not found: not found

For me I included a .dockerignore file and placed many other entries other than node_modules

**/node_modules
README.md
package.json
package-lock.json
docker-compose.dev.yml

So naturally, its not copying required package.json file, and hence the error. Silly mistake from my side, hope this helps someone.

Upvotes: 17

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