luzifer-docker/docker-clean
2
0
Fork 0
mirror of https://github.com/luzifer-docker/docker-clean.git synced 2024-12-20 16:21:18 +00:00
Code Issues Releases Wiki Activity

Check whether image is in use by hash

Browse source 
this seems sometimes to be required as the Docker daemon looses the
reference and does not display the name in `docker ps -a` output...

Signed-off-by: Knut Ahlers <knut@ahlers.me>
This commit is contained in:
Knut Ahlers 2018-07-08 21:31:43 +02:00
parent e5bf6c53af
commit 6924335526
Signed by: luzifer
GPG key ID: DC2729FDD34BE99E
2 changed files with 14 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
Dockerfile
View file

@ -4,7 +4,8 @@ RUN set -ex \
&& apk --no-cache add \
bash \
docker \
gawk
gawk \
jq
COPY docker-clean /usr/local/bin/

17
docker-clean
View file

@ -2,9 +2,9 @@
set -euo pipefail
if [ -e "${HOME}/bin/script_framework.sh" ]; then
source "${HOME}/bin/script_framework.sh"
source "${HOME}/bin/script_framework.sh"
else
function step() { echo $@; }
function step() { echo $@; }
fi
step "Removing containers created / exited >= ~1h ago..."
@ -14,9 +14,16 @@ CONTAINERS=$(docker ps -a | gawk '/(hours?|days?|weeks?|months?) ago\s+(Created|
step "Untagging all images not used by containers..."
PS_OUTPUT=$(docker ps -a)
for img in $(docker images | gawk '/^[a-z].*(hours?|days?|weeks?|months?) ago/{ print $1":"$2 }' | grep -v '<none>' | sort | uniq); do
if ! (echo "${PS_OUTPUT}" | grep -q "\s${img}\s") && ! (echo "${PS_OUTPUT}" | grep -q "\s${img%:latest}\s"); then
docker rmi --no-prune "${img}"
fi
imghash=$(docker inspect "${img}" | jq -r '.[0].Id' | sed -E 's/^sha256:(.{12}).*/\1/')
# Check if image is currently active
(echo "${PS_OUTPUT}" | grep -q "\s${img}\s") && continue
# Check if image with stripped ":latest" is currently active
(echo "${PS_OUTPUT}" | grep -q "\s${img%:latest}\s") && continue
# Check if image hash is currently active (sometimes docker looses named references)
(echo "${PS_OUTPUT}" | grep -q "\s${imghash}\s") && continue
docker rmi --no-prune "${img}"
done
step "Removing dangling images..."