Add rewrite_by_lua module to nginx:alphine

I have a docker image nginx:stable-alpine, and i need to use nginx-extras
in order to use rewrite_by_lua directive.
I tried to install it via apk add --cached but nothing work.

This is my dockerfile:

FROM nginx:stable-alpine
RUN apk add nginx-extras

This is the docker build logs:

Building nginx
Step 1/2 : FROM nginx:stable-alpine
 ---> acc350649a48
Step 2/2 : RUN apk add nginx-extras
 ---> Running in 857246deaaf7
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
  nginx-extras (missing):
    required by: world[nginx-extras]

Any help would be well appreciated.

Source: StackOverflow