Move build to clickhouse_exporter by Clickhouse (#1)

* use latest commit from Clickhouse/clickhouse_exporter

Dockerfile

@@ -1,17 +1,20 @@
-FROM golang:1.14.0-alpine3.11 AS BUILD
+FROM golang:1.15-alpine3.12 AS BUILD
 
-ENV CLICKHOUSE_EXPORTER_RELEASE v0.1.0
+ENV CLICKHOUSE_EXPORTER_RELEASE master
+ENV CLICKHOUSE_EXPORTER_COMMIT 3c6a60b49e94a35a3a109a362b77381ebc364d49
 ENV BUILD_PATH /go/src/github.com/Percona-Lab
-ENV GIT_REPO https://github.com/Percona-Lab/clickhouse_exporter.git
+ENV GIT_REPO https://github.com/ClickHouse/clickhouse_exporter.git
 
 RUN mkdir -p ${BUILD_PATH} && \
     apk add --no-cache make git && \
     cd ${BUILD_PATH} && \
     git clone ${GIT_REPO} -b ${CLICKHOUSE_EXPORTER_RELEASE} && \
     cd clickhouse_exporter && \
-    make init && make build
+    git checkout ${CLICKHOUSE_EXPORTER_COMMIT} && \
+    export GO111MODULE=on && make init && \
+    unset GO111MODULE && make build
 
-FROM alpine:3.11
+FROM alpine:3.12
 
 COPY --from=BUILD /go/bin/clickhouse_exporter /usr/local/bin/clickhouse_exporter