RemotesRun/libraries/update/docker.sh

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2022-01-08 13:07:34 +00:00
#!/bin/bash
# ____ _ ____
# | _ \ ___ _ __ ___ ___ | |_ ___ ___| _ \ _ _ _ __
# | |_) / _ \ '_ ` _ \ / _ \| __/ _ \/ __| |_) | | | | '_ \
# | _ < __/ | | | | | (_) | || __/\__ \ _ <| |_| | | | |
# |_| \_\___|_| |_| |_|\___/ \__\___||___/_| \_\\__,_|_| |_|
#
# Run several scripts on remote servers automatically.
# Copyright (C) 2022 Ad5001
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
# This library contains docker related utilities
# Updates a docker container to a newer version of the image by tag,
# and relaunches the container with a specified script.
# Signature: (<string container_name>, <string container_tag>, <string run_script>) -> void
update_docker() {
container_name=$1
container_tag=$2
run_script=$3
info "Seaching for updates for $container_name..."
run_as_root "docker pull $container_tag"
eq=$(run_as_root "docker ps" | awk -F ' {2,}' '$7 == "'$container_name'" { print $2 }')
if [ -z "$eq" ]; then
# No published ports, so we check field 6.
eq=$(run_as_root "docker ps" | awk -F ' {2,}' '$6 == "'$container_name'" { print $2 }')
fi
# If the image doesn't have the awaited tag, then
if [[ $eq != "$container_tag" ]]; then
# On relance le conteneur.
info "Restarting container $container_name..."
run_as_root "bash $run_script"
# On supprime l'ancienne image pour libérer de l'espace.
success "$container_name restarted!"
info "Deleting old image version of $container_name..."
sudo -p "" -i -S bash -c "docker rmi $eq"
if [ $? -eq 0 ]; then
success "Old image of $container_name deleted!"
else
error "Old image of $container_name could not be removed."
fi
else
success "$container_name up to date!"
fi
echo ""
}