Issue while add Docker repository to package manager source list.

[Inbakalatheeswaran]

Facing an issue while install Docker Engine in IDP environment.

OS : ubuntu-linux-24-04-server
Command : sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu (lsb_release -cs) stable"
Added Error description for investigation and reference purposes.

Repository: 'deb [arch=amd64] https://download.docker.com/linux/ubuntu (lsb_release stable -cs)' Description: Archive for codename: (lsb_release components: stable,-cs) More info: https://download.docker.com/linux/ubuntu Adding repository. Press [ENTER] to continue or Ctrl-c to cancel. Adding deb entry to /etc/apt/sources.list.d/archive_uri-https_download_docker_com_linux_ubuntu-noble.list Adding disabled deb-src entry to /etc/apt/sources.list.d/archive_uri-https_download_docker_com_linux_ubuntu-noble.list Ign:1 https://download.docker.com/linux/ubuntu (lsb_release InRelease Err:2 https://download.docker.com/linux/ubuntu (lsb_release Release 404 Not Found [IP: 3.170.249.105 443] Hit:3 http://ports.ubuntu.com/ubuntu-ports noble InRelease Get:4 http://ports.ubuntu.com/ubuntu-ports noble-updates InRelease [126 kB] Get:5 http://ports.ubuntu.com/ubuntu-ports noble-backports InRelease [126 kB] Get:6 http://ports.ubuntu.com/ubuntu-ports noble-security InRelease [126 kB] Get:7 http://ports.ubuntu.com/ubuntu-ports noble-updates/main arm64 Packages [1,176 kB] Get:8 http://ports.ubuntu.com/ubuntu-ports noble-updates/main Translation-en [276 kB] Get:9 http://ports.ubuntu.com/ubuntu-ports noble-updates/main arm64 Components [178 kB] Get:10 http://ports.ubuntu.com/ubuntu-ports noble-updates/restricted arm64 Packages [2,005 kB] Get:11 http://ports.ubuntu.com/ubuntu-ports noble-updates/restricted Translation-en [302 kB] Get:12 http://ports.ubuntu.com/ubuntu-ports noble-updates/universe arm64 Packages [1,695 kB] Get:13 http://ports.ubuntu.com/ubuntu-ports noble-updates/universe Translation-en [333 kB] Get:14 http://ports.ubuntu.com/ubuntu-ports noble-updates/universe arm64 Components [387 kB] Get:15 http://ports.ubuntu.com/ubuntu-ports noble-updates/multiverse arm64 Packages [70.9 kB] Get:16 http://ports.ubuntu.com/ubuntu-ports noble-updates/multiverse Translation-en [12.1 kB] Get:17 http://ports.ubuntu.com/ubuntu-ports noble-backports/main arm64 Components [3,572 B] Get:18 http://ports.ubuntu.com/ubuntu-ports noble-backports/universe arm64 Packages [32.7 kB] Get:19 http://ports.ubuntu.com/ubuntu-ports noble-backports/universe arm64 Components [12.6 kB] Get:20 http://ports.ubuntu.com/ubuntu-ports noble-security/main arm64 Packages [918 kB] Get:21 http://ports.ubuntu.com/ubuntu-ports noble-security/main Translation-en [196 kB] Get:22 http://ports.ubuntu.com/ubuntu-ports noble-security/main arm64 Components [43.3 kB] Get:23 http://ports.ubuntu.com/ubuntu-ports noble-security/restricted arm64 Packages [1,868 kB] Get:24 http://ports.ubuntu.com/ubuntu-ports noble-security/restricted Translation-en [281 kB] Get:25 http://ports.ubuntu.com/ubuntu-ports noble-security/universe arm64 Packages [1,249 kB] Get:26 http://ports.ubuntu.com/ubuntu-ports noble-security/universe Translation-en [238 kB] Get:27 http://ports.ubuntu.com/ubuntu-ports noble-security/universe arm64 Components [76.3 kB] Get:28 http://ports.ubuntu.com/ubuntu-ports noble-security/multiverse arm64 Packages [67.0 kB] Get:29 http://ports.ubuntu.com/ubuntu-ports noble-security/multiverse Translation-en [10.4 kB] Reading package lists... Done E: The repository 'https://download.docker.com/linux/ubuntu (lsb_release Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details.

[Inbakalatheeswaran]

Root Cause

Investigated the root cause if the issue and the cause of the issue is :

[!NOTE]
The error happens because the literal string (lsb_release was accidentally pasted into your repository configuration file instead of being executed as a terminal command. This causes your system to look for a non-existent webpage (...(lsb_release Release), resulting in a 404 Not Found error

Steps to Fix this Error

Step 1: Locate and Delete the Broken Docker File
$ sudo rm -f /etc/apt/sources.list.d/docker.list
Step 2: Clear Out Broken Cache Data
$ sudo apt-get clean
$ sudo rm -rf /var/lib/apt/lists/*
Step 3: Find the exact file containing the error
$ grep -rn "lsb_release" /etc/apt/
Step 4: Fix the file
$ grep -rn "lsb_release" /etc/apt/
output:
/etc/apt/sources.list.d/archive_uri-https_download_docker_com_linux_ubuntu-noble.list:1:deb https://download.docker.com/linux/ubuntu (lsb_release stable -cs)
/etc/apt/sources.list.d/archive_uri-https_download_docker_com_linux_ubuntu-noble.list:2:# deb-src https://download.docker.com/linux/ubuntu (lsb_release stable -cs)
Step 5: Delete the problematic file
$ sudo rm -f /etc/apt/sources.list.d/archive_uri-https_download_docker_com_linux_ubuntu-noble.list
Step 6: Clear your package list cache
$ sudo rm -rf /var/lib/apt/lists/*
Step 7: Run the system update again
$ sudo apt update

[Inbakalatheeswaran]

Issue resolved and docker installed successfully.

vagrant@sloopstash-ubuntu-linux-24-04-server:~$ sudo systemctl status docker.service
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; preset: enabled)
Active: active (running) since Sat 2026-07-25 05:41:20 UTC; 1min 27s ago
TriggeredBy: ● docker.socket
Docs: https://docs.docker.com
Main PID: 13651 (dockerd)
Tasks: 8
Memory: 27.5M (peak: 27.8M)
CPU: 340ms
CGroup: /system.slice/docker.service
└─13651 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

Jul 25 05:41:19 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:19.941192576Z" level=info msg="Restoring containers: start."
Jul 25 05:41:19 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:19.965564132Z" level=info msg="Deleting nftables IPv4 rules">
Jul 25 05:41:19 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:19.970659304Z" level=info msg="Deleting nftables IPv6 rules">
Jul 25 05:41:20 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:20.158706070Z" level=info msg="Loading containers: done."
Jul 25 05:41:20 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:20.165977811Z" level=info msg="Docker daemon" commit=3d80467>
Jul 25 05:41:20 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:20.166084304Z" level=info msg="Initializing buildkit"
Jul 25 05:41:20 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:20.557173036Z" level=info msg="Completed buildkit initializa>
Jul 25 05:41:20 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:20.562532691Z" level=info msg="Daemon has completed initiali>
Jul 25 05:41:20 sloopstash-ubuntu-linux-24-04-server dockerd[13651]: time="2026-07-25T05:41:20.562556064Z" level=info msg="API listen on /run/docker.soc>
Jul 25 05:41:20 sloopstash-ubuntu-linux-24-04-server systemd[1]: Started docker.service - Docker Application Container Engine.
vagrant@sloopstash-ubuntu-linux-24-04-server:~$