Update oatpp-async.dockerfile silent

Author: joanhey

frameworks/C++/oatpp/oatpp-async.dockerfile

@@ -14,7 +14,7 @@ RUN git checkout 4cd37af26ffa55231f11649106a1bb33a3244cd1
 WORKDIR /test/oatpp/build
 
 RUN cmake -DOATPP_DISABLE_ENV_OBJECT_COUNTERS=ON -DCMAKE_BUILD_TYPE=Release -DOATPP_BUILD_TESTS=OFF ..
-RUN make install
+RUN make install --quiet
 
 #---------------------------------------------------------------
 # build test app
@@ -24,7 +24,7 @@ ADD src-async /test/src-async
 WORKDIR /test/src-async/build
 
 RUN cmake -DCMAKE_BUILD_TYPE=Release ..
-RUN make
+RUN make --quiet
 
 EXPOSE 8000