Update Dockerfile

diff --git a/Dockerfile b/Dockerfile
index 78f0915a46d784ecc6f80ae3745a0e03ffcf79fd..48397c851c275054e65f5d1e44aa835f8bc56a62 100755 (executable)
--- a/Dockerfile
+++ b/Dockerfile
@@ -53,7 +53,7 @@ RUN set -x \
         tk-dev \
         zlib-dev \
         libuv-dev \
-        libffi \
+        libffi-dev \
     # setup jmalloc
     && curl -L -f -s "https://github.com/jemalloc/jemalloc/releases/download/${JEMALLOC_VERSION}/jemalloc-${JEMALLOC_VERSION}.tar.bz2" \
             | tar -xjf - -C /usr/src \