blogker/aux/pull-n-build.sh

#!/bin/sh

# stop on error
set -e -v

{
	# Log date
	date

	# check if initial git run
	if [ "$REPO_URL" == "" ]; then
		# no repo URL set.
		# most likely the repo is passed through as volume
		# do not pull, treat the repo as-is
		true
	else
		# repo URL set
		if [ ! -d /repo ]; then
			# repo needs to be cloned
			git clone --recurse-submodules $REPO_URL /repo
		else
			# no - pull existing repo
			cd /repo && git pull --recurse-submodules
		fi
	fi

	# create temporary working directory
	tmpdir=$(mktemp --directory)
	# copy over into temporary directory
	cp -r /repo/* $tmpdir

	# build and copy over
	cd $tmpdir && \
	hugo && \
	rm -rf /usr/share/nginx/html/* && \
	cp -R $tmpdir/public/* /usr/share/nginx/html && \
	chown nginx:nginx -R /usr/share/nginx/html

	# cleanup
	rm -rf $tmpdir

} 2>&1 | tee /var/log/blogker-pull-n-build.log