add Dockerfile based on debian:9

Dockerfile

@@ -0,0 +1,16 @@
+FROM    debian:9-slim
+ADD     .       /usr/local/twemperf
+ENV     buildDeps       "gcc make autoconf g++ automake"
+RUN     DEBIAN_FRONTEND=noninteractive       apt-get update && apt-get install -y \
+        --no-install-recommends \
+        $buildDeps
+RUN     cd /usr/local/twemperf \
+        && autoreconf -fvi \
+        && CFLAGS=-"-ggdb3 -O0"./configure \
+        && make \
+        && make install
+RUN     apt-get purge -y --autoremove $buildDeps      -o APT:AutoRemove::RecommendsImportant=false \
+        && apt-get autoremove \
+        && apt-get autoclean \
+        && rm -rf /var/lib/apt-lists/* \
+        && rm -rf /usr/local/twemperf/