Move compose to the root, update docs and unify control (#93)

control/Dockerfile

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+FROM debian:10
+
+RUN apt-get update -qq && apt-get install wget gnupg2 -y && rm -rf /var/lib/apt/lists/*
+RUN wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -
+RUN echo "deb http://apt.postgresql.org/pub/repos/apt buster-pgdg main" > /etc/apt/sources.list.d/pgdg.list
+RUN apt-get update -qq && apt-get install postgresql-9.6 postgresql-10 postgresql-13 -y && rm -rf /var/lib/apt/lists/*
+RUN localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
+
+ENV LANG en_US.utf8
+
+ADD . /control

control/backup/entrypoint.sh

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+#!/bin/bash
+set -e
+
+timestamp=$(date +%s)
+mkdir -p /backups
+cd /backups
+filename="${timestamp}-pgdata.tar.gz"
+echo "Backing up PostgreSQL data into backups/${filename}..."
+tar czf "${filename}" -C "$PGDATA" .
+filename="${timestamp}-opdata.tar.gz"
+echo "Backing up OpenProject assets into backups/${filename}..."
+tar czf "${filename}" -C "$OPDATA" .
+echo "DONE"

control/upgrade/entrypoint.sh

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+#!/bin/bash
+set -e
+set -o pipefail
+
+/control/upgrade/scripts/00-db-upgrade.sh
+
+echo "Please restart your installation by issuing the following command:"
+echo "  docker compose up -d --build --pull always"

control/upgrade/scripts/00-db-upgrade.sh

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+#!/bin/bash
+set -e
+set -o pipefail
+
+CURRENT_PGVERSION="$(cat $PGDATA/PG_VERSION)"
+NEW_PGVERSION="13"
+PGWORKDIR=${PGWORKDIR:=/var/lib/postgresql/work}
+
+if [ ! "$CURRENT_PGVERSION" -lt "$NEW_PGVERSION" ]; then
+	echo "Current PG version is higher or equal to the PG version to be installed ($CURRENT_PGVERSION > $NEW_PGVERSION). Ignoring."
+	exit 0
+fi
+
+export PGBINOLD="/usr/lib/postgresql/$CURRENT_PGVERSION/bin"
+export PGBINNEW="/usr/lib/postgresql/$NEW_PGVERSION/bin"
+export PGDATAOLD="$PGDATA"
+export PGDATANEW="$PGWORKDIR/datanew"
+
+rm -rf "$PGWORKDIR" && mkdir -p "$PGWORKDIR" "$PGDATANEW"
+chown -R postgres.postgres "$PGDATA" "$PGWORKDIR"
+cd "$PGWORKDIR"
+# initialize new db
+su -m postgres -c "$PGBINNEW/initdb --pgdata=$PGDATANEW --encoding=unicode --auth=trust"
+echo "Performing a dry-run migration to PostgreSQL $NEW_PGVERSION..."
+su -m postgres -c "$PGBINNEW/pg_upgrade -c"
+echo "Performing the real migration to PostgreSQL $NEW_VERSION..."
+su -m postgres -c "$PGBINNEW/pg_upgrade"
+su -m postgres -c "rm -rf $PGDATAOLD/* && mv $PGDATANEW/* $PGDATAOLD/"
+# as per docker hub documentation
+su -m postgres -c "echo \"listen_addresses = '*'\" >> $PGDATAOLD/postgresql.conf"
+su -m postgres -c "echo \"host all all all md5\" >> $PGDATAOLD/pg_hba.conf"
+echo "DONE"