Problem with curl library

[twixwix]

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Expected Behavior

With the Plugin xtern should every link be checked if they are online or not.

Current Behavior

The xtern plugin requires the curl library

Steps to Reproduce

1. Installed the plugin
2. One every page is the warning

Environment

OS: Ubuntu 18.04 CPU architecture: x86_64/arm32/arm64
How docker service was installed:

Command used to create docker container (run/create/compose/screenshot)

dokuwiki: container_name: dokuwiki image: linuxserver/dokuwiki environment:

• PUID=1000
• PGID=1000
• TZ=Europe/London
• APP_URL=/dokuwiki #optional volumes:
• ./dokuwiki/config:/config ports:
• 88:80
• 8443:443 #optional restart: always

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