error-pages/docker/docker-entrypoint.d/100-setup-error-pages.sh
2021-04-13 18:55:03 +05:00

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#!/usr/bin/env sh
set -e
# allows to use random template
if [ ! -z "$TEMPLATE_NAME" ] && ([ "$TEMPLATE_NAME" = "random" ] || [ "$TEMPLATE_NAME" = "RANDOM" ]); then
# find all templates in directory (only template directories must be located in /opt/html)
allowed_templates=$(find /opt/html/* -maxdepth 1 -type d -exec basename {} \;);
# pick random template name
random_template_name=$(shuf -e -n1 $allowed_templates);
echo "$0: Use '$random_template_name' as randomly selected template";
TEMPLATE_NAME="$random_template_name"
fi;
TEMPLATE_NAME=${TEMPLATE_NAME:-ghost} # string|empty
echo "$0: Set pages for template '$TEMPLATE_NAME' as default (make accessible in root directory)";
# check for template existing
if [ ! -d "/opt/html/$TEMPLATE_NAME" ]; then
echo >&3 "$0: Template '$TEMPLATE_NAME' was not found!";
exit 1;
fi;
# allows "direct access" to the error pages using URLs like "/500.html"
ln -f -s "/opt/html/$TEMPLATE_NAME/"* /opt/html;
# on `docker restart` next directory keep existing: <https://github.com/tarampampam/error-pages/issues/3>
if [ -d /opt/html/nginx-error-pages ]; then
rm -Rf /opt/html/nginx-error-pages;
fi;
# next directory is required for easy nginx `error_page` usage
mkdir /opt/html/nginx-error-pages;
# use error pages from the template as "native" nginx error pages
ln -f -s "/opt/html/$TEMPLATE_NAME/"* /opt/html/nginx-error-pages;
exit 0