init

Dockerfile

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+FROM debian:11
+RUN apt-get update
+RUN apt-get dist-upgrade
+RUN apt-get install -y git apache2 rsync wget supervisor
+WORKDIR /tmp
+RUN wget https://github.com/gohugoio/hugo/releases/download/v0.111.3/hugo_extended_0.111.3_linux-amd64.deb
+RUN dpkg -i hugo_*_linux-amd64.deb
+RUN mkdir -p /var/lock/apache2 /var/run/apache2 /var/run/sshd /var/log/supervisor
+COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+COPY builder /usr/local/bin/builder
+
+
+EXPOSE 80
+CMD ["/usr/bin/supervisord"]

builder

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+#!/usr/bin/env bash
+set -e
+
+REPO="https://git.c3re.de/c3re/test-website.git"
+
+refresh() {
+	cd
+
+	test -d site/.git || {
+		test -d site && rm -rf site
+		git clone --recursive "$REPO" site
+
+	}
+
+	cd site
+	git pull
+	# iterate over all branches and checkout that branch
+	for branch in $(git branch -a | grep remotes | grep -v HEAD); do
+		branch=${branch#remotes/origin/}
+		git checkout "$branch"
+		git pull
+		git reset --hard
+		hugo
+		mkdir -p /var/www/html/"$branch"
+		rsync -avz --delete public/* /var/www/html/"$branch"/
+
+	done
+
+}
+
+while true; do
+	sleep 60 &
+
+	refresh
+
+	wait
+
+done

supervisord.conf

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+[supervisord]
+nodaemon=true
+
+[program:builder]
+command=/usr/local/bin/builder
+
+[program:apache2]
+command=/bin/bash -c "source /etc/apache2/envvars && exec /usr/sbin/apache2 -DFOREGROUND"