remove php source after install

Dockerfile

@@ -56,7 +56,7 @@ RUN apt update -qq && \
     apt install -y libaspell15 && \
     apt autoremove -y && \
     rm -rf /var/lib/apt/* && \
-    rm -rf /var/cache/apt/* \
+    rm -rf /var/cache/apt/* && \
     rm -rf /usr/src/*
 COPY templater /usr/local/bin/    
 COPY php.ini /usr/local/etc/php/