How to know which node:alpine image version is in running container

Question

I have one running container which uses node:alpine as base image.I want to know version of this image.

Answer 1

You can check the Dockerfile of the container if handy.

You can check the first line with FROM node:<version>-alpine

For example :

FROM node:12.18.1-alpine
ENV NODE_ENV=production
WORKDIR /app

You can also use the command docker image inspect

https://docs.docker.com/engine/reference/commandline/image_inspect/

You can also exec into the container to check the version of Node

Command to check node version:

docker exec -ti <Container name> sh -c "node --version"