Update Docker.md

Docker/Docker.md

@@ -11,6 +11,20 @@
 - `/var/lib/docker/containers/`: Container configuration and file directory.
 - `/var/lib/docker/volumes`: Directory where docker volumes are saved.
 
+## Docker Installtion (Ubuntu)
+```bash
+apt update && apt install ca-certificates curl && install -m 0755 -d /etc/apt/keyrings && curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc && chmod a+r /etc/apt/keyrings/docker.asc
+
+# Add the repository to Apt sources:
+echo \
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
+  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
+  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
+apt update && apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+```
+
+
+
 ## Docker CLI Commands
 
 ### Authentication