Install imagemagick on Nextcloud to make a big warning triangle go away

playbooks/tasks/web/nextcloud.yml

@@ -3,6 +3,16 @@
   docker_container:
     name: nextcloud
     image: nextcloud:21
+    # The entrypoint workaround is for this issue:
+    #
+    # https://github.com/nextcloud/docker/issues/1414
+    #
+    # This installs imagemagick to allow for SVG support and to clear the last
+    # setup warning in the application.
+    # It can be safely removed upon closure of this issue. I'm just doing it to
+    # make the big bad triangle go away.
+    entrypoint: /bin/sh
+    command: -c "apt-get update; apt-get install -y libmagickcore-6.q16-6-extra; /entrypoint.sh apache2-foreground"
     env:
       PHP_UPLOAD_LIMIT: 1024M
     networks: