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falk-werner_webfuse-provider/build/mkdocker/bin/get_container_id.sh
nosamad 979ff1e689 refactor(mkdockerbuild): extracts common parts (#24)
* fixes mount of project in wrapper scripts, when not running in container

* refactors makefile in preparation to extract common parts

* refactors makefiles and scripts

* fix git ignore matches

* adds support to disable fetch

* update

* fixes docker warning about unused build argument

* adds support to force offline build

fixes shell escaping
changes paths to relative where possible

* moves make docker builder support files

* removes unnecessary configuration elements

* fixes initial download directory creation

* adds missing rule for initial download directory creation

* fixes docker error: unable to prepare context

copies dockerfile to build context, in order to remove dependency to
unsupported/new docker feature
2019-04-17 17:25:56 +02:00

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#!/bin/sh
set -e
container_id() {
if [ "$#" -le 0 ]; then
# shellcheck disable=SC2119
container_id_by_cgroup
else
"$DOCKER" inspect --format='{{.Id}}' "$@"
fi
}
# shellcheck disable=SC2120
container_id_by_cgroup() {
impl_container_id_by_cgroup "$@" || return "$?"
}
impl_container_id_by_cgroup() {
file="${1:-/proc/self/cgroup}"
while IFS= read -r cmd; do
id="$(echo "$cmd" | sed -n -e 's/[^:]*:[^:]*:.*\/\([0-9a-fA-F]\+\)$/\1/p')"
if container_id "$id" >/dev/null 2>&1; then
echo "$id"
return 0
fi
done < "$file"
return 1
}
DOCKER="${DOCKER:-docker}"
if [ -z "${CONTAINER+x}" ] && [ -n "$DOCKER" ]; then
CONTAINER="$(container_id "$@")"
fi
echo "$CONTAINER"