feat(build): support for multi arch container image (#233)

* support for multi arch container image via github actions
* suffix amd64 arch tag in zfs driver image

Signed-off-by: prateekpandey14 <prateek.pandey@mayadata.io>

buildscripts/zfs-driver/zfs-driver.Dockerfile

@@ -0,0 +1,61 @@
+# Copyright 2019-2020 The OpenEBS Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM golang:1.14.7 as build
+
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETVARIANT=""
+
+ENV GO111MODULE=on \
+  GOOS=${TARGETOS} \
+  GOARCH=${TARGETARCH} \
+  GOARM=${TARGETVARIANT} \
+  DEBIAN_FRONTEND=noninteractive \
+  PATH="/root/go/bin:${PATH}"
+
+WORKDIR /go/src/github.com/openebs/zfs-localpv/
+
+RUN apt-get update && apt-get install -y make git
+
+COPY go.mod go.sum ./
+# Get dependancies - will also be cached if we won't change mod/sum
+RUN go mod download
+
+COPY . .
+
+RUN make buildx.csi-driver
+
+FROM ubuntu:19.10
+
+RUN apt-get clean && rm -rf /var/lib/apt/lists/*
+RUN apt-get update; exit 0
+RUN apt-get -y install rsyslog libssl-dev xfsprogs ca-certificates
+RUN apt-get -y install btrfs-progs netcat
+
+ARG DBUILD_DATE
+ARG DBUILD_REPO_URL
+ARG DBUILD_SITE_URL
+
+COPY --from=build /go/src/github.com/openebs/zfs-localpv/bin/zfs-driver/zfs-driver /usr/local/bin/zfs-driver
+
+LABEL org.label-schema.name="zfs-driver"
+LABEL org.label-schema.description="OpenEBS ZFS LocalPV Driver"
+LABEL org.label-schema.schema-version="1.0"
+LABEL org.label-schema.build-date=$DBUILD_DATE
+LABEL org.label-schema.vcs-url=$DBUILD_REPO_URL
+LABEL org.label-schema.url=$DBUILD_SITE_URL
+
+ENTRYPOINT ["/usr/local/bin/zfs-driver"]
+EXPOSE 7676 7777