chore(deps): bump alpine from 3.15.0 to 3.15.4 (#224)

dependabot[bot] · web-flow · commit 55465a1ab273 · 2022-05-02T22:58:08.000+10:00
Co-authored-by: dependabot[bot] &lt;49699333+dependabot[bot]@users.noreply.github.com&gt;
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.15.0
+FROM alpine:3.15.4
 
 ARG BUILD_DATE
 ARG VCS_REF
