Repository: syncthing/syncthing (language: go)

Issue:
Use healtcheck endpoint for docker
We have a proper healthcheck endpoint as of https://github.com/syncthing/syncthing/pull/8585 but our docker image still defaults to a simple TCP connection check.

e.g

```sh
curl -fksSL 127.0.0.1:8384/rest/noauth/health | grep -o --color=never "OK" || exit 1
```


Discussion / hints:

Fix patch:
diff --git a/Dockerfile b/Dockerfile
index d201c0811c5..dd25db10fda 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,7 +15,7 @@ EXPOSE 8384 22000/tcp 22000/udp 21027/udp
 
 VOLUME ["/var/syncthing"]
 
-RUN apk add --no-cache ca-certificates su-exec tzdata libcap
+RUN apk add --no-cache ca-certificates curl libcap su-exec tzdata
 
 COPY --from=builder /src/syncthing /bin/syncthing
 COPY --from=builder /src/script/docker-entrypoint.sh /bin/entrypoint.sh
@@ -23,7 +23,7 @@ COPY --from=builder /src/script/docker-entrypoint.sh /bin/entrypoint.sh
 ENV PUID=1000 PGID=1000 HOME=/var/syncthing
 
 HEALTHCHECK --interval=1m --timeout=10s \
-  CMD nc -z 127.0.0.1 8384 || exit 1
+  CMD curl -fkLsS -m 2 127.0.0.1:8384/rest/noauth/health | grep -o --color=never OK || exit 1
 
 ENV STGUIADDRESS=0.0.0.0:8384
 ENTRYPOINT ["/bin/entrypoint.sh", "/bin/syncthing", "-home", "/var/syncthing/config"]


Test patch: