update pecl channel

workspace/Dockerfile

@@ -33,6 +33,7 @@ ENV PGID ${PGID}
 
 # always run apt update when start and after add new source list, then clean up at end.
 RUN apt-get update -yqq && \
+    pecl channel-update pecl.php.net && \
     groupadd -g ${PGID} laradock && \
     useradd -u ${PUID} -g laradock -m laradock -G docker_env && \
     usermod -p "*" laradock