Try to fix Let's Encrypt issues

Author: TheAssassin

Dockerfile.centos7-i386

@@ -20,6 +20,7 @@ COPY /entrypoint-centos.sh /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]
 SHELL ["/entrypoint.sh", "bash", "-c"]
 
+RUN yum update ca-certificates
 RUN wget https://artifacts.assassinate-you.net/prebuilt-cmake/cmake-v3.19.1-centos7-i386.tar.gz -O- | tar xz --strip-components=1 -C/usr/local
 
 # pcre >= 8.40 required by glib 2.56

Dockerfile.centos7-x86_64

@@ -17,6 +17,7 @@ COPY /entrypoint-centos.sh /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]
 SHELL ["/entrypoint.sh", "bash", "-c"]
 
+RUN yum update ca-certificates
 RUN wget https://artifacts.assassinate-you.net/prebuilt-cmake/cmake-v3.19.1-centos7-x86_64.tar.gz -O- | tar xz --strip-components=1 -C/usr/local
 
 # pcre >= 8.40 required by glib 2.56