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Docker issues are frequently logged for DNS resolution in containers because it doens't inhert or get values for DNS from NetworkManager which leverages a built in dnsmasq to inteligently manage DNS.

Perminant workarround

sudo bash -c "echo listen-address=$(ip -4 addr show dev docker0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}') > /etc/NetworkManager/dnsmasq.d/docker-bridge"
sudo systemctl reload NetworkManager
sudo bash -c 'echo -e "{\n\t\"dns\": [\"$(ip -4 addr show dev docker0 | grep -oP "(?<=inet\s)\d+(\.\d+){3}")\"]\n}" > /etc/docker/daemon.json'
sudo systemctl restart docker

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Delete all containers

$ docker ps -q -a | xargs docker rm

• -q prints only the container IDs
• -a prints all containers

Notice that it uses xargs to issue a remove container command for each container ID

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References:

• Ubuntu Community Wiki - PinningHowto
• Debian Wiki - AptPreferences

Overview

Priority values

From man page: man apt_preferences

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// Use Gists to store code you would like to remember later on
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