Add lua-socket and lua-sec packages necessary for DNSSEC TA updates

Dockerfile

@@ -30,6 +30,8 @@ RUN apt-get -q update \
   knot-resolver-module-http \
   openvpn \
   socat \
+  lua-socket \
+  lua-sec \
   && rm -rf /var/lib/apt/lists/*
 
 COPY --from=build /shapeshifter-dispatcher/shapeshifter-dispatcher /usr/local/bin/shapeshifter-dispatcher