Update CHANGELOG

CHANGELOG.md

@@ -21,13 +21,17 @@
 
 #### Improvements
 
+ * The default Docker image is now based on alpine:3.8 and runs the full test suite during build. It also sets
+   `/usr/bin/fabio` as `ENTRYPOINT` with `-cfg /etc/fabio/fabio.properties` as default command line arguments.
+   The previous image was built on `scratch`.
+
  * [PR #497](https://github.com/fabiolb/fabio/pull/497): Make tests pass with latest Consul and Vault versions
- 
+
    Thanks to [@pschultz](https://github.com/pschultz) for the patch.
 
  * [PR #531](https://github.com/fabiolb/fabio/pull/531): Set flush buffer interval for non-SSE requests
 
-   This PR adds a `proxy.globalflushinterval` option to configure an interval when the HTTP Response 
+   This PR adds a `proxy.globalflushinterval` option to configure an interval when the HTTP Response
    Buffer is flushed.
 
    Thanks to [@samm-git](https://github.com/samm-git) for the patch.
@@ -43,12 +47,12 @@
   Thanks to [@shantanugadgil](https://github.com/shantanugadgil) for the patch.
 
  * [Issue #548](https://github.com/fabiolb/fabio/issues/548): Slow glob matching with large number of services
- 
+
    This patch adds the new `glob.matching.enabled` option which controls whether glob matching is enabled for
    route lookups. If the number of routes is large then the glob matching can have a performance impact and
    disabling it may help.
 
-  Thanks to [@galen0624](https://github.com/galen0624) for the patch and 
+  Thanks to [@galen0624](https://github.com/galen0624) for the patch and
   [@leprechau](https://github.com/leprechau) for the review.
 
 #### Features