ahh i fixed it by doing the ''sudo apt --fix-broken install'' command
here the output:
pi@raspberrypi:~$ sudo docker images | grep apache
php apache fabd924a2602 2 weeks ago 300MB
pi@raspberrypi:~$ sudo journalctl -xe
--
-- The unit UNIT has successfully entered the 'dead' state.
Apr 15 22:35:17 raspberrypi dockerd[20968]: time="2020-04-15T22:35:17.440820362+02:00" level=info msg="[graphdriver] using prior storage driver: overlay2"
Apr 15 22:35:17 raspberrypi systemd[1]: var-lib-docker-overlay2-check\x2doverlayfs\x2dsupport900759855-merged.mount: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support:
https://www.debian.org/support
--
-- The unit var-lib-docker-overlay2-check\x2doverlayfs\x2dsupport900759855-merged.mount has successfully entered the 'dead' state.
Apr 15 22:35:17 raspberrypi dockerd[20968]: time="2020-04-15T22:35:17.993878377+02:00" level=warning msg="Your kernel does not support swap memory limit"
Apr 15 22:35:18 raspberrypi dockerd[20968]: time="2020-04-15T22:35:18.001165312+02:00" level=warning msg="Your kernel does not support cgroup cfs period"
Apr 15 22:35:18 raspberrypi dockerd[20968]: time="2020-04-15T22:35:18.001628308+02:00" level=warning msg="Your kernel does not support cgroup cfs quotas"
Apr 15 22:35:18 raspberrypi dockerd[20968]: time="2020-04-15T22:35:18.002204302+02:00" level=warning msg="Your kernel does not support cgroup rt period"
Apr 15 22:35:18 raspberrypi dockerd[20968]: time="2020-04-15T22:35:18.002920296+02:00" level=warning msg="Your kernel does not support cgroup rt runtime"
Apr 15 22:35:18 raspberrypi dockerd[20968]: time="2020-04-15T22:35:18.003357292+02:00" level=warning msg="Unable to find cpuset cgroup in mounts"
Apr 15 22:35:18 raspberrypi dockerd[20968]: time="2020-04-15T22:35:18.003903287+02:00" level=warning msg="mountpoint for pids not found"
Apr 15 22:35:18 raspberrypi dockerd[20968]: time="2020-04-15T22:35:18.087796532+02:00" level=info msg="Loading containers: start."
Apr 15 22:35:22 raspberrypi systemd-udevd[20983]: Using default interface naming scheme 'v240'.
Apr 15 22:35:24 raspberrypi avahi-daemon[20832]: Joining mDNS multicast group on interface docker0.IPv4 with address 172.17.0.1.
Apr 15 22:35:24 raspberrypi kernel: IPv6: ADDRCONF(NETDEV_UP): docker0: link is not ready
Apr 15 22:35:24 raspberrypi avahi-daemon[20832]: New relevant interface docker0.IPv4 for mDNS.
Apr 15 22:35:24 raspberrypi avahi-daemon[20832]: Registering new address record for 172.17.0.1 on docker0.IPv4.
Apr 15 22:35:25 raspberrypi dockerd[20968]: time="2020-04-15T22:35:25.391925210+02:00" level=info msg="Default bridge (docker0) is assigned with an IP address
Apr 15 22:35:27 raspberrypi dockerd[20968]: time="2020-04-15T22:35:27.420703220+02:00" level=info msg="Loading containers: done."
Apr 15 22:35:28 raspberrypi systemd[464]: var-lib-docker-overlay2-opaque\x2dbug\x2dcheck950963431-merged.mount: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support:
https://www.debian.org/support
--
-- The unit UNIT has successfully entered the 'dead' state.
Apr 15 22:35:28 raspberrypi systemd[1]: var-lib-docker-overlay2-opaque\x2dbug\x2dcheck950963431-merged.mount: Succeeded.
-- Subject: Unit succeeded
-- Defined-By: systemd
-- Support:
https://www.debian.org/support
--
-- The unit var-lib-docker-overlay2-opaque\x2dbug\x2dcheck950963431-merged.mount has successfully entered the 'dead' state.
Apr 15 22:35:30 raspberrypi dockerd[20968]: time="2020-04-15T22:35:30.250776234+02:00" level=info msg="Docker daemon" commit=afacb8b graphdriver(s)=overlay2 ve
Apr 15 22:35:30 raspberrypi dockerd[20968]: time="2020-04-15T22:35:30.268169081+02:00" level=info msg="Daemon has completed initialization"
Apr 15 22:35:31 raspberrypi systemd[1]: Started Docker Application Container Engine.
-- Subject: A start job for unit docker.service has finished successfully
-- Defined-By: systemd
-- Support:
https://www.debian.org/support
--
-- A start job for unit docker.service has finished successfully.
--
-- The job identifier is 2687.
Apr 15 22:35:31 raspberrypi sudo[20936]: pam_unix(sudo:session): session closed for user root
Apr 15 22:35:31 raspberrypi dockerd[20968]: time="2020-04-15T22:35:31.826611377+02:00" level=info msg="API listen on /var/run/docker.sock"
Apr 15 22:35:36 raspberrypi sudo[21122]: pi : TTY=pts/0 ; PWD=/home/pi ; USER=root ; COMMAND=/usr/bin/docker images
Apr 15 22:35:36 raspberrypi sudo[21122]: pam_unix(sudo:session): session opened for user root by pi(uid=0)
Apr 15 22:35:40 raspberrypi sudo[21122]: pam_unix(sudo:session): session closed for user root
Apr 15 22:37:02 raspberrypi sudo[21137]: pi : TTY=pts/0 ; PWD=/home/pi ; USER=root ; COMMAND=/bin/journalctl -xe
Apr 15 22:37:02 raspberrypi sudo[21137]: pam_unix(sudo:session): session opened for user root by pi(uid=0)