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#!/bin/bash
set -ef -o pipefail
# shellcheck source=jenkins-helpers.sh
. "$(dirname $0)"/jenkins-helpers.sh
convert_args_to_variables "$@"
shift "$SHIFT_CONVERTED_ARGS"
obligatory_variables container image
keep_existing="${keep_existing-true}"
verbose="${verbose-true}"
set -u
if $verbose; then set -x; fi
# shellcheck disable=SC2154
docker pull "$image"
rm_cnt=""
# shellcheck disable=SC2154
if docker stats --no-stream "$container" >/dev/null 2>&1; then
case "$keep_existing" in
true) exit 0 ;;
keep_if_same_image)
old_image=$(docker container inspect -f "{{.Image}}" "$container")
new_image=$(docker image inspect -f "{{.Id}}" "$image")
if [ x"$old_image" = x"$new_image" ]; then
exit 0
fi
;;
esac
# Rename the current container to free-up the name for "docker run" below.
rm_cnt="$container.bak"
docker rename "$container" "$rm_cnt"
fi
start_sh=$(mktemp)
docker run --rm $image start.sh > "$start_sh"
bash "$start_sh" "$@"
rm "$start_sh"
if [ x"$rm_cnt" != x"" ]; then
# With the new container started delete the old one.
# Note that if both old and new containers need an exclusive resource
# (e.g., tcp port or connection to jenkins), then the new container might
# need to restart a couple of times to wait for removal of the old one.
docker rm -vf "$rm_cnt"
fi
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