The error message you're encountering indicates that Jenkins is having trouble accessing the Docker socket and the Dockerfile in your Jenkins job's workspace. This is often due to permissions and configuration issues. Here are the steps to troubleshoot and resolve this issue: Docker Socket Permission: The error message "permission denied" indicates that Jenkins doesn't have the necessary permission to access the Docker daemon socket (/var/run/docker.sock). Add Jenkins to Docker Group: The most common approach to address this is to add the jenkins user (or the user under which Jenkins is running) to the docker group. This allows the user to access the Docker daemon socket without needing sudo privileges. Run the following commands in your terminal to add the Jenkins user to the docker group: sudo usermod -aG docker jenkins newgrp docker # This command activates the group change for the current shell session Restart Jenkins: After adding the Jenkins user to the doc...