Log file contents:
Hit:1 http://repo.linaro.org/ubuntu/linaro-overlay stretch InRelease
Ign:2 http://cdn-fastly.deb.debian.org/debian stretch InRelease
Hit:3 http://cdn-fastly.deb.debian.org/debian stretch-updates InRelease
Hit:4 http://cdn-fastly.deb.debian.org/debian stretch-backports InRelease
Hit:5 http://cdn-fastly.deb.debian.org/debian stretch Release
Ign:6 https://deb.debian.org/debian-security stretch/updates InRelease
Err:7 https://deb.debian.org/debian-security stretch/updates Release
  server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
Reading package lists...
E: The repository 'https://deb.debian.org/debian-security stretch/updates Release' does no longer have a Release file.
It should match:
deb https://deb.debian.org/debian/ stretch main contrib non-free
deb https://deb.debian.org/debian/ stretch-updates main contrib non-free
deb https://deb.debian.org/debian-security/ stretch/updates main contrib non-free
deb https://deb.debian.org/debian/ stretch-backports main contrib non-free
Please also paste results of:
dpkg -l | grep debian-archive-keyring
Date | Thu 3 Nov 17:17:08 GMT 2016
It's due to system clock not correctly synchronized. (Network connections appears to be fine.)
Hmm due to fake-hwclock removal? Should actually not be an issue as this just influences clock during boot until time sync. And dietpi-software separately does a time sync check.
systemd-timesyncd settings? Should be [0-3].debian.pool.ntp.org on older images and empty (resulting in local gateway, if passed via DHCP and [0-3].debian.pool.ntp.org otherwise) on new images.
@adamotte

Please check the following and paste results to check whether fake-hwclock is correctly (un)installed, based on hwclock availability and systemd-timesyncd servers + status:
dpkg --get-selections | grep 'fake-hwclock'
hwclock
cat /etc/systemd/timesyncd.conf
systemctl start systemd-timesyncd
sleep 10
systemctl status systemd-timesyncd
systemctl stop systemd-timesyncd
          
@MichaIng You're right it was due to system clock. After manually adjusted it, and restarted dietpi-software, everything ran fine.

FYI, i had modified dietpi.txt to add softwares to be installed directly on first boot.

Now my clock is perfectly synchronized so i guess timesyncd worked after the all boot/install but if you have a software list to install too, there is a gap of unsynchronized time.
[Edit] Sorry for late answer, i was busy to my docker installation next
Yep, due to removal of fake-hwclockI believe:
root@DietPi:~# hwclock
2018-08-27 20:44:37.840811+0100
root@DietPi:~# dpkg -l | grep hwclock
root@DietPi:~#
I'll set a patch to reinstall it for all systems, regardless of hwclock. Maybe we can add an option in dietpi-config to allow users to select if hwclock is actually available?
(12/09/18)
**Many thanks to PINE64, for becoming our 1st Patreon Legend and supporting our project! As one of their rewards, you will see PINE64 displayed on login via the DietPi-Banner.**
**Known issues / In progress:**
DietPi-Software | Open Bazaar: Installation updated to server version 2, which now runs via go language. At the current state, client OB connections are failing, still under investigation: https://github.com/Fourdee/DietPi/issues/1090#issuecomment-419613346
**Changes / Improvements / Optimizations:**
General | Changed Survey and Bugreport uploads to use ssh.dietpi.com (previously IP): https://github.com/Fourdee/DietPi/issues/2022#issuecomment-415470064
General | 1st run setup and dietpi-update logs are now created in RAM, then copied to disk once completed '/var/tmp/dietpi/logs/dietpi-firstrun-setup.log'. This will speed up 1st run setup installation for slow SBCs and/or rootFS.
General | PineA64: Image updated to v6.14, also contains the latest kernel/uboot by Ayufan (0.6.2): https://github.com/Fourdee/DietPi/issues/2026
General | Resolved an isssue where the initial 1st run connection test would fail, if timesync had not yet completed, and, the SSL cert of the connection test site is not valid for current date on system: https://github.com/Fourdee/DietPi/issues/2039
General | SparkySBC: Support for native DSD playback on iFi Pro iDSD. Many thanks @sudeep: https://github.com/sparky-sbc/sparky-test/tree/master/dsd-marantz
DietPi-Backup/Sync | rsync transfer: Now shows progress information during the transfer: https://github.com/Fourdee/DietPi/issues/2044#issuecomment-417779406
DietPi-Backup | Added an option to delete the currently selected backup, if it exists.
DietPi-Config | Advanced Options: You can now toggle if a real RTC is installed. This adds/removes 'fake-hwclock' package installation as requested: https://github.com/Fourdee/DietPi/issues/2041
DietPi-Config | Added support for setting CPU min/max frequencies on Intel based CPUs. NB: 'cpu' command will always list the min/max frequencies read from kernel values, Intel CPUs do not update these values, however, you can gauge CPU frequency range by running 'cpu' to monitor the current CPU freq (use of stress test in 'dietpi-config' may also help).
DietPi-Drive_Manager | Added support to set a global idle duration, before drives are powered down. This feature uses hdparm. Not all drives will support this feature, however, its the best we can do, considering the lack of any standardised system across all drives, compatible with hdparm and visa versa: https://github.com/Fourdee/DietPi/issues/2001
DietPi-Drive_Manager | When mounting drives to existing directories, if the directory is empty, you will given an option to mount regardless. If the directory contains any files or data, mounting will be denied: https://github.com/Fourdee/DietPi/issues/2056
DietPi-Software | MPD: Updated to 0.20.21 and now includes SQL (sticker) support by default: https://github.com/Fourdee/DietPi/issues/2032#issuecomment-415559451
DietPi-Software | myMPD: Now available for installation. A recent fork of YMPD with additional features: https://github.com/Fourdee/DietPi/issues/2032#issuecomment-415559451
DietPi-Software | Emby: Reworked the installation to use standalone .debs, for fresh installations only. Now supports ARMv8 devices. ARMv6 devices are not supported: https://github.com/Fourdee/DietPi/issues/534#issuecomment-416405968
**Bug Fixes:**
General | fake-hwclock: is now installed for all systems, due to 'hwclock' detection reporting incorrect results, for those devices without a RTC attached: https://github.com/Fourdee/DietPi/issues/2035#issuecomment-416345155
General | Resolved an issue where enabling the RPi camera (dietpi-config or installed via dietpi-software), would result in concurrent execution error: https://github.com/Fourdee/DietPi/issues/2008#issuecomment-414846353
General | Resolved an issue with RK based network devices, where enabling offloading would cause stability issues. Many thanks to @carlosedp for this fix!: https://github.com/Fourdee/DietPi/issues/2028#issue-352323603
General | Resolved an issue where automatic swapfile generation, would not run a freespace check prior: https://github.com/Fourdee/DietPi/issues/2048#issuecomment-417855645
DietPi-Automation | Resolved an issue where 'AUTO_SETUP_INSTALL_SOFTWARE_ID' would include numbers contained within comments: https://github.com/Fourdee/DietPi/issues/2036#issuecomment-416613903
DietPi-Cloudshell | Resolved incorrect RAM usage readout, and, inability to run from menu on same screen: https://github.com/Fourdee/DietPi/issues/2066
DietPi-Config | Resolved an issue with PineA64 resolution changes, due to updated uEnv.txt on the latest PineA64 image. NB: for this feature to work, you must have an installation of the latest PineA64 v6.14 image from the DietPi site: https://dietpi.com/phpbb/viewtopic.php?f=11&t=4431&p=14010#p14010
DietPi-Drive_Manager | Correctly handles bind mounts, contained within '/etc/fstab': https://github.com/Fourdee/DietPi/issues/2013
DietPi-Process_Tool | Resolved an issue with PIDs no longer existing, causing an apply to fail: https://github.com/Fourdee/DietPi/issues/2059
DietPi-Software | PlexPy/Tautulli: Resolved an issue with recent pre-req changes for this application, required for start functionality: https://github.com/Fourdee/DietPi/issues/2047
DietPi-Update | Resolved an issue where all required EMR patches, would not be applied, in the 1st pass of the patch_file.