Docker build unsatisfiable constraints: so:libwebp.so.7 (missing):

General Discussions
1

Hello everyone, i’m fairly new to building my own docker image and I want to make some configuration on an existing docker image from https://github.com/migae21/docker-dokuwiki and I am encountering this error:

Step 7/17 : RUN apk --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/main/ add libressl2.4-libssl tzdata && apk --no-cache --re
pository http://dl-cdn.alpinelinux.org/alpine/edge/community/ add php7 php7-fpm php7-gd php7-session php7-zlib php7-openssl php7-xml nginx super
visor curl tar
 ---> Running in 60ad3e2e0a51
fetch http://dl-cdn.alpinelinux.org/alpine/edge/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.4/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.4/community/x86_64/APKINDEX.tar.gz
(1/3) Installing libressl2.4-libcrypto (2.4.5-r0)
(2/3) Installing libressl2.4-libssl (2.4.5-r0)
(3/3) Installing tzdata (2017a-r0)
Executing busybox-1.24.2-r13.trigger
OK: 10 MiB in 14 packages
fetch http://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.4/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.4/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
  so:libwebp.so.7 (missing):
    required by:
                 php7-gd-7.0.17-r4[so:libwebp.so.7]
The command '/bin/sh -c apk --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/main/ add libressl2.4-libssl tzdata && apk --no-ca
che --repository http://dl-cdn.alpinelinux.org/alpine/edge/community/ add php7 php7-fpm php7-gd php7-session php7-zlib php7-openssl php7-xml ngi
nx supervisor curl tar' returned a non-zero code: 2

I hope this log output is enough to diagnose my issue.

Thanks!

2

Figured it out by adding libwebp. :grin:
I am completely new to this linux command things.