docker: avoid past creates being scheduled during first start

Author: pietroalbini

docker-entrypoint.sh

@@ -32,6 +32,8 @@ cratesfyi database update-release-activity
 
 if ! [ -d "${CRATESFYI_PREFIX}/crates.io-index/.git" ]; then
     git clone https://github.com/rust-lang/crates.io-index "${CRATESFYI_PREFIX}/crates.io-index"
+    # Prevent new crates built before the container creation to be built
+    git --git-dir="$CRATESFYI_PREFIX/crates.io-index/.git" branch crates-index-diff_last-seen
 fi
 
 cratesfyi "$@"