Strip binary

Dockerfile

@@ -20,7 +20,8 @@ RUN ./autogen.sh NOCONFIG && \
     ./configure --without-freetype2 --disable-go --disable-r --disable-swig --disable-java --disable-python2 --disable-python3 --without-glut --enable-static --disable-shared --disable-guile --disable-lua --disable-php --disable-ruby --disable-tcl --with-qt=no --disable-ltdl --with-libgd=no --with-pangocairo=no && \
     make -j4 && \
     rm cmd/dot/dot_static && \
-    make -C cmd/dot dot_static LDFLAGS="-all-static"
+    make -C cmd/dot dot_static LDFLAGS="-all-static" && \
+    strip cmd/dot/dot_static
 
 FROM scratch
 COPY --from=build /tmp/graphviz-src/cmd/dot/dot_static /usr/bin/dot