add Dockerfile and docker-compose.yml for zipkin example

Signed-off-by: Andrew Hsu <[email protected]>

example/zipkin/Dockerfile

@@ -0,0 +1,18 @@
+# Copyright The OpenTelemetry Authors
+#
+# 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:alpine
+COPY . /go/src/github.com/open-telemetry/opentelemetry-go/
+WORKDIR /go/src/github.com/open-telemetry/opentelemetry-go/
+RUN go install ./example/zipkin/main.go
+CMD ["/go/bin/main"]

example/zipkin/docker-compose.yml

@@ -0,0 +1,35 @@
+# Copyright The OpenTelemetry Authors
+#
+# 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.
+version: "3.7"
+services:
+  zipkin-collector:
+    image: openzipkin/zipkin-slim:latest
+    ports:
+      - "9411:9411"
+    networks:
+      - example
+  zipkin-client:
+    build:
+      dockerfile: $PWD/Dockerfile
+      context: ../..
+    command:
+      - "/bin/sh"
+      - "-c"
+      - "while ! nc -w 1 -z zipkin-collector 9411; do echo sleep for 1s waiting for zipkin-collector to become available; sleep 1; done && /go/bin/main -zipkin http://zipkin-collector:9411/api/v2/spans"
+    networks:
+      - example
+    depends_on:
+      - zipkin-collector
+networks:
+  example: