Unable to install specific version of nodejs in my php-nginx:7.4-alpine docker image

[mattkomarnicki]

So I've found an answer on how to install specific version of nodejs.

My dockerfile goes as follows:

FROM webdevops/php-nginx:7.4-alpine

WORKDIR /var/www/html

I want to install nodejs, version 14.18.1. So after FROM and before WORKDIR, I've added:

RUN apk add --update nodejs=14.18.1

Then as soon as I rebuild the image I get:

[+] Building 2.6s (5/6)
 => [internal] load build definition from app.dockerfile                                                                                               0.0s
 => => transferring dockerfile: 172B                                                                                                                   0.0s
 => [internal] load .dockerignore                                                                                                                      0.0s
 => => transferring context: 2B                                                                                                                        0.0s
 => [internal] load metadata for docker.io/webdevops/php-nginx:7.4-alpine                                                                              0.0s
 => CACHED [1/3] FROM docker.io/webdevops/php-nginx:7.4-alpine                                                                                         0.0s
 => ERROR [2/3] RUN apk add --update nodejs=14.18.1                                                                                                    2.5s
------
 > [2/3] RUN apk add --update nodejs=14.18.1:
#5 0.185 fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
#5 1.220 fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
#5 1.567 fetch https://dl-4.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
#5 2.430 ERROR: unsatisfiable constraints:
#5 2.456   nodejs-12.22.6-r0:
#5 2.456     breaks: world[nodejs=14.18.1]
------
failed to solve: rpc error: code = Unknown desc = executor failed running [/bin/sh -c apk add --update nodejs=14.18.1]: exit code: 1

If I replace this line with RUN apk add --update nodejs npm then it works but it installs version 12 which not what I want.

What am I doing wrong?

[tractorcow]

This is what i used to target specific versions (using php-nginx:7.4). Sorry I haven't attempted this with alpine though.

RUN apt-get clean
RUN apt-get update
RUN curl -sL https://deb.nodesource.com/setup_14.x | bash -
RUN apt-get install -y nodejs