Can somebody explain to me why I get a
unsatisfiable constraints:
pdftk (missing):
required by: world[pdftk]
error when running
apk update
apk add pdftk
in my alpine docker-image, although it seems to be included in alpine?
Best regards
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Nemo Grippa
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At the time of writing this, pdftk is available on Alpine 3.8, but not Alpine 3.9 (which is the latest version). I simply reverted to Alpine 3.8 for now to get the desired effect. – conradkleinespel Mar 18 '19 at 14:33
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Updated answer here: https://stackoverflow.com/questions/66553937/unsatisfiable-constraints-error-when-installing-pdftk-alpine-linux – nicky May 29 '21 at 01:56
1 Answers
6
It seems there is no local cache of alpine repositories inside your docker image.
So, in order to fix this you can do the following:
1. Use --no-cache flag when you do apk add to not use any local cache path:
$ docker run -ti alpine:3.7
/ # apk add --no-cache pdftk
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
(1/5) Installing libgcc (6.4.0-r5)
(2/5) Installing gmp (6.1.2-r1)
(3/5) Installing libstdc++ (6.4.0-r5)
(4/5) Installing libgcj (6.4.0-r5)
(5/5) Installing pdftk (2.02-r1)
Executing busybox-1.27.2-r7.trigger
OK: 76 MiB in 16 packages
2. Update local cache first (apk update) and then install necessary packages (apk add <package>):
$ docker run -ti alpine:3.7
/ # apk update
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
v3.7.0-159-g08fa87dac2 [http://dl-cdn.alpinelinux.org/alpine/v3.7/main]
v3.7.0-160-g82f356f8c4 [http://dl-cdn.alpinelinux.org/alpine/v3.7/community]
OK: 9050 distinct packages available
/ # apk add pdftk
(1/5) Installing libgcc (6.4.0-r5)
(2/5) Installing gmp (6.1.2-r1)
(3/5) Installing libstdc++ (6.4.0-r5)
(4/5) Installing libgcj (6.4.0-r5)
(5/5) Installing pdftk (2.02-r1)
Executing busybox-1.27.2-r7.trigger
OK: 76 MiB in 16 packages
P.S. Also please remember that pdftk package was added to alpine repositories starting from version 3.5. It could be the case you are using alpine:3.4 as a base docker image.
P.P.S. pdftk package is not present from alpine repositories on 3.9.
