bitbake: contrib/hashserv/Dockerfile: Add libgcc to image for runtime dependency

Libgcc is required as a runtime dependency. Without it, we get the
following error:

OSError: Error loading shared library libgcc_s.so.1: No such file or
directory

(Bitbake rev: 95e61f3dacacb3a001d9f0e2db4c4a2960d96640)

Signed-off-by: Jesse Riemens <riemensjesse@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/contrib/hashserv/Dockerfile

@@ -11,7 +11,7 @@
 
 FROM alpine:3.13.1
 
-RUN apk add --no-cache python3
+RUN apk add --no-cache python3 libgcc
 
 COPY bin/bitbake-hashserv /opt/bbhashserv/bin/
 COPY lib/hashserv /opt/bbhashserv/lib/hashserv/