tl;dr: docker exec --interactive \ --tty \ --user root \ --workdir / \ oracle-container-name bash Using Oracle’s Docker database image I wanted to install some additional apps, without modifying the Dockerfile. Connect to the container: $ docker exec --interactive --tty docker-compose_oracle_1_479e7fa05ab5 bash No sudo: [oracle@a37d6e99353b ~]$ sudo whoami bash: sudo: command not found Googled, found the the --user flag for Docker, tried that: $ docker exec --interactive --tty --user root docker-compose_oracle_1_479e7fa05ab5 bash OCI runtime exec failed: exec failed: container_linux.

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