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Watchtower setup for Docker auto updates

Posted: 06 Aug 2026, 02:47
by samw5
I just upgraded to TOS 7 and my watchtower container no longer seems to be working.
I used the following guide https://tmnascommunity.eu/download/watchtower/
Not sure if anything needs to be tweaked for the new OS but would love to get that working again :(

Re: Watchtower setup for Docker auto updates

Posted: 06 Aug 2026, 09:43
by TMzethar
According to community Tips, the web frontend for community apps still needs PHP to run. Since the latest stable TOS 7 no longer ships with PHP binaries, you'll need to install PHP 7.4 from the App Center if you're getting a 502 Bad Gateway error.

If your issue is something else, please share the symptoms and error messages you're seeing.

Re: Watchtower setup for Docker auto updates  [Accepted]

Posted: 06 Aug 2026, 20:09
by samw5
Ended up adding - DOCKER_API_VERSION=1.54 to the YML config file. that seems to at least allow the container to start. I'll have to see IF the updates are properly going thru.

Re: Watchtower setup for Docker auto updates

Posted: 07 Aug 2026, 06:03
by NOC
TMzethar wrote: 06 Aug 2026, 09:43 According to community Tips, the web frontend for community apps still needs PHP to run. Since the latest stable TOS 7 no longer ships with PHP binaries, you'll need to install PHP 7.4 from the App Center if you're getting a 502 Bad Gateway error.
Sry, I am new to this forum...are you really asking to install PHP 7.4 which has reached its end-of-life almost four (4!) years ago and where the web is full of warnings to never ever use this version anymore because of security reasons?

Re: Watchtower setup for Docker auto updates

Posted: 07 Aug 2026, 07:31
by Gremlin
NOC wrote: 07 Aug 2026, 06:03
Please read the earlier post from Forum Support again. The PHP7.4 relates to COMMUNITY apps. These are not provided by Terramaster, rather by independent developer(s). TM are providing a direct PHP installation to enable those apps affected to be able to continue working. At some point it may not be necessary but until the developer(s) can fix things - which is well noted on the community site - you will have to be content with the way things are.
I'll tip my hat to the community developer(s) who do this stuff out of the goodness of their heart(s), because I'm sure not many people contribute enough to the effort.
And I don't use the Community Apps at all.

Re: Watchtower setup for Docker auto updates

Posted: 11 Aug 2026, 06:20
by NOC
Gremlin wrote: 07 Aug 2026, 07:31
Many thanks or the explanation, but my comment wasn't meant as a criticism of the community developers, I had viewed the web front end for community apps as part of TOS 7.
By the way, I pay for open-source software that I use regularly.

Re: Watchtower setup for Docker auto updates

Posted: 11 Aug 2026, 07:44
by samw5
For whatever it's worth, i was just able to get it working by adding the api line in the yml file, nothing with PHP.