Merge pull request #3301 from dairidong/fix-php-fpm-imagemagick-install

fix sometimes cannot find dependencies

php-fpm/Dockerfile

@@ -804,6 +804,7 @@ ARG IMAGEMAGICK_VERSION=latest
 ENV IMAGEMAGICK_VERSION ${IMAGEMAGICK_VERSION}
 
 RUN if [ ${INSTALL_IMAGEMAGICK} = true ]; then \
+    apt-get update && \
     apt-get install -yqq libmagickwand-dev imagemagick && \
     if [ $(php -r "echo PHP_MAJOR_VERSION;") = "8" ]; then \
       cd /tmp && \