Add sync.sh script

This downloads and installs dependencies necessary to run or develop.

Add docker-compose.yml for initial use

framework/shims/node

@@ -5,10 +5,8 @@
 set -eu
 
 node_shim_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-export node_shim_DIR
-
-source "$node_shim_DIR"/../versions
 
+# shellcheck source=node.common
 source "$node_shim_DIR"/node.common
 
 exec "$nodejs_binary_dir/node" "$@"