--- /dev/null
+# Copyright (c) 2021 Samsung.
+#
+# 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 nexus3.o-ran-sc.org:10002/o-ran-sc/bldr-ubuntu18-c-go:1.9.0 AS a1-build
+
+RUN apt-get update -y && apt-get install -y jq
+
+# Update CA certificates
+RUN apt update && apt install --reinstall -y \
+ ca-certificates \
+ && \
+ update-ca-certificates
+
+ENV PATH="/usr/local/go/bin:${PATH}"
+
+ENV GOPATH="/go"
+
+RUN mkdir -p /go/bin
+RUN mkdir -p /go/src/ws
+WORKDIR "/go/src/ws"
+
+# Module prepare (if go.mod/go.sum updated)
+COPY go.mod /go/src/ws
+COPY go.sum /go/src/ws
+RUN GO111MODULE=on go mod download
+
+# build and test
+COPY . /go/src/ws
+
+# Build the code
+RUN GO111MODULE=on GO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o /go/src/ws/cache/go/cmd/a1 cmd/a1.go
+
+# Run unit tests
+RUN GO111MODULE=on GO_ENABLED=0 GOOS=linux go test -p 1 -cover ./pkg/resthooks/
+RUN GO111MODULE=on GO_ENABLED=0 GOOS=linux go test -p 1 -cover ./pkg/a1/
+
+RUN gofmt -l $(find cmd/ pkg/ -name '*.go' -not -name '*_test.go')
+
+CMD ["/bin/bash"]
+
+
+#----------------------------------------------------------
+FROM ubuntu:18.04 as a1-mediator
+
+RUN apt-get update -y \
+ && apt-get install --reinstall -y sudo openssl ca-certificates ca-cacert \
+ && apt-get clean && update-ca-certificates
+
+#
+# a1-mediator
+#
+RUN mkdir -p /opt/a1-mediator \
+ && chmod -R 755 /opt/a1-mediator
+
+COPY --from=a1-build /go/src/ws/cache/go/cmd/a1 /opt/a1-mediator/a1
+
+WORKDIR /opt/a1-mediator
+
+COPY a1-entrypoint.sh /opt/a1-mediator/
+ENTRYPOINT ["/opt/a1-mediator/a1-entrypoint.sh"]
+
--- /dev/null
+#!/bin/bash
+
+# Copyright (c) 2021 Samsung
+#
+# 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.
+
+# Start services, etc.
+/opt/a1-mediator/a1 -f /opt/ric/config/config.yaml
+