Using WatchTower To Keep Docker Images Updated
12#WatchTower #Docker #Updates
Full steps can be found at https://i12bretro.github.io/tutorials/0756.html
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What is WatchTower?
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Watchtower is an application that will monitor your running Docker containers and watch for changes to the images that those containers were originally started from. If watchtower detects that an image has changed, it will automatically restart the container using the new image. - https://containrrr.dev/watchtower/introduction/
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Pull the WatchTower Image
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01. Log into the Docker host
02. Run the following command in a terminal window
docker pull containrrr/watchtower
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Check for Available Updates, Without Applying Them
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01. Log into the Docker host
02. Run the following command in a terminal window
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock containrrr/watchtower --run-once --monitor-only --include-restarting --include-stopped
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Update Running Containers
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01. Log into the Docker host
02. Run the following command in a terminal window
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock containrrr/watchtower --run-once
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Update Running Containers, Deleting Outdated Images
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01. Log into the Docker host
02. Run the following command in a terminal window
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock containrrr/watchtower --run-once --cleanup
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Update All Containers, Deleting Outdated Images
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01. Log into the Docker host
02. Run the following command in a terminal window
docker run --rm -v /var/run/docker.sock:/var/run/docker.sock containrrr/watchtower --run-once --cleanup --include-restarting --include-stopped
In addition, notifications can be configured using environment variables. More info can be found at https://containrrr.dev/watchtower/notifications/.
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