95 lines
3.5 KiB
Markdown
95 lines
3.5 KiB
Markdown
# dockcheck
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### A script checking updates for docker images **without pulling** - then selectively auto-update some/all containers.
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___
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## Dependencies:
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Running docker (duh) and compose, either standalone or plugin.
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[`regclient/regctl`](https://github.com/regclient/regclient) (Licensed under [Apache-2.0 License](http://www.apache.org/licenses/LICENSE-2.0))
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User will be prompted to download `regctl` if not in `PATH` or `PWD`
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___
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## `dockcheck.sh`
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```
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$ ./dockcheck.sh -h
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Syntax: dockcheck.sh [OPTION] [part of name to filter]
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Example: dockcheck.sh -a ng
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Options:
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-h Print this Help.
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-a|y Automatic updates, without interaction.
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-n No updates, only checking availability.
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-p Auto-Prune dangling images after update.
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-r Allow updating images for docker run, wont update the container.
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```
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Basic example:
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```
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$ ./dockcheck.sh
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. . .
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Containers on latest version:
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glances
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homer
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Containers with updates available:
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1) adguardhome
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2) syncthing
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3) whoogle-search
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Choose what containers to update:
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Enter number(s) separated by comma, [a] for all - [q] to quit:
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```
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Then it proceedes to run `pull` and `up -d` on every container with updates.
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After the updates are complete, you'll get prompted if you'd like to prune dangling images.
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### `-r flag` :warning: disclaimer and warning:
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**Wont auto-update the containers, only their images. (compose is recommended)**
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`docker run` dont support using new images just by restarting a container.
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Containers need to be manually stopped, removed and created again to run on the new image.
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### :beetle: Squashed Bugs:
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- ~~No options for running without updates or auto update.~~
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- ~~No filter to check only specific containers.~~
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- ~~Faulty registry checkups stopped the updates completely.~~
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- ~~No clear checks to skip containers producing errors.~~
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- ~~Multi-digest images didn't correctly check with registry, giving false positives on updates.~~
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- ~~Not working with filenames other than `docker-compose.yml`~~
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- ~~Lists are not alphabetically sorted (due to stacks and other parameters)~~
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- ~~Old `docker-compose` binary-check sometimes returned false error~~
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- ~~Stacks gets updated as whole, even if only one service is chosen.~~
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- ~~Path broken occationally (from inspect) - probably due to old docker-compose binary.~~
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- ~~Script breaks if one of the chosen containers are a `docker run` container.~~
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- ~~Using relative paths for volumes eg. `${PWD}/data:data` will create the volumes where you stand.~~
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- ~~Having no curl/wget leads to corrupt `regctl` without alerting.~~
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- ~~Using custom `.env` files does not work.~~
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### :hammer: Known issues
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- ~~No granular choice of what to update (except initial name filter).~~
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- No detailed error feedback (just skip + list what's skipped) .
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## `dupc_function.sh`
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Function to quickly check for updates on a single contianer or list of containers by name. **Without the need of pulling**.
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Preferably placed in `.bashrc` or similar.
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Example:
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```
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$ dupc ng
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Updates available for local_nginx.
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nginx_reverse is already latest.
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Updates available for paperless-ng.
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```
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# License
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dockcheck is created and released under the [GNU GPL v3.0](https://www.gnu.org/licenses/gpl-3.0-standalone.html) license.
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___
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## Check out a spinoff brother-project:
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### [Palleri/dockcheck-web](https://github.com/Palleri/dockcheck-web) for a WebUI-front!
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## Special Thanks:
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- :bison: [t0rnis](https://github.com/t0rnis)
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- :leopard: [Palleri](https://github.com/Palleri)
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