build: install gosu from tianon/gosu image instead of ap

Author: krishanbhasin-px

docker/Dockerfile.common

@@ -13,10 +13,11 @@ RUN apt-get update && \
       apache2 \
       apache2-dev \
       libapr1-dev \
-      apache2-utils \
-      gosu && \
+      apache2-utils && \
     rm -rf /var/lib/apt/lists/*
 
+COPY --from=tianon/gosu /gosu /usr/local/bin/
+
 # Set up needed permissions and users
 # - User groups:
 #   - trame-user: non-priviledge user for running and accessing data