Update Go version in the build container. (#195)

tools/Dockerfile

@@ -1,30 +1,31 @@
-FROM golang
+FROM golang:1.16-alpine
 
 ENV LD_LIBRARY_PATH=/usr/local/lib
 
-RUN apt-get update && apt-get install -y --no-install-recommends \
-  libgflags-dev libsnappy-dev zlib1g-dev libbz2-dev libzstd-dev make tar wget
+RUN apk add bash build-base bzip2-dev gflags-dev linux-headers \
+            perl snappy-dev util-linux wget zlib-dev zstd-dev
 
 # Install cleveldb
 RUN \
-  wget https://github.com/google/leveldb/archive/v1.20.tar.gz \
+  wget -q https://github.com/google/leveldb/archive/v1.20.tar.gz \
   && tar xvf v1.20.tar.gz \
   && cd leveldb-1.20 \
   && make \
   && cp -a out-static/lib* out-shared/lib* /usr/local/lib \
   && cd include \
   && cp -a leveldb /usr/local/include \
-  && ldconfig \
+  && ldconfig $LD_LIBRARY_PATH \
   && cd ../.. \
   && rm -rf v1.20.tar.gz leveldb-1.20
 
 # Install Rocksdb
 RUN \
-  wget https://github.com/facebook/rocksdb/archive/v6.6.4.tar.gz \
+  wget -q https://github.com/facebook/rocksdb/archive/v6.6.4.tar.gz \
   && tar -zxf v6.6.4.tar.gz \
   && cd rocksdb-6.6.4 \
+  && sed -i'' 's/install -C/install -c/g' Makefile \
   && DEBUG_LEVEL=0 make -j4 shared_lib \
   && make install-shared \
-  && ldconfig \
+  && ldconfig $LD_LIBRARY_PATH \
   && cd .. \
   && rm -rf v6.6.4.tar.gz rocksdb-6.6.4