v0.15.1 mercure release requires v2.7.2 of caddy, breaking API Platform docker builds

[BurningDog]

The API Platform Dockerfile uses 2.6.4 of Caddy:

RUN xcaddy build v2.6.4 \
	--with github.com/dunglas/mercure/caddy \
	--with github.com/dunglas/vulcain/caddy

This results in building caddy with the latest version of mercure - v0.15.1 - but this release requires v2.7 of Caddy.

Docker container builds fail with the following:

6.092 2023/08/04 14:44:31 [INFO] exec (timeout=-2562047h47m16.854775808s): /usr/local/go/bin/go get -d -v github.com/dunglas/mercure/caddy github.com/caddyserver/caddy/v2@v2.6.4 
6.369 go: downloading github.com/dunglas/mercure v0.15.1
6.370 go: downloading github.com/dunglas/mercure/caddy v0.15.1
6.969 go: github.com/dunglas/mercure/caddy@upgrade (v0.15.1) requires github.com/caddyserver/caddy/v2@v2.7.2, not github.com/caddyserver/caddy/v2@v2.6.4
6.970 2023/08/04 14:44:32 [FATAL] exit status 1

Should the API Platform Dockerfile be pinned to use a specific version of Mercure for the 2.6.4 build?

[dunglas]

This has been fixed in recent API Platform versions: api-platform/api-platform#2452 (comment)

To fix this issue, you can either switch to the new method to install Caddy (better), or change v2.6.4 by v2.7.2.