Add ca-certificates to let us run curl

build.sh

@@ -5,7 +5,7 @@
 
 # Packages that are only used to build the container. These will be
 # removed once we're done.
-BUILD_PACKAGES="curl rsync"
+BUILD_PACKAGES="ca-certificates curl rsync"
 
 # Packages required to serve the website and run the services.
 # We have to keep the python3 packages around in order to run