Fixing arm (#7)

Author: quietsy

Dockerfile

@@ -48,7 +48,9 @@ RUN \
   echo "**** install build packages ****" && \
   apt-get update && \
   apt-get install -y --no-install-recommends \
+    build-essential \
     clang \
+    cmake \
     gcc \
     git \
     libre2-dev \
@@ -64,7 +66,9 @@ RUN \
     libre2-10 && \
   echo "**** cleanup ****" && \
   apt-get purge -y \
+    build-essential \
     clang \
+    cmake \
     gcc \
     git \
     libre2-dev \