[go-server] Add dockerfile for building and run petstore service (#274)

* Add possibility to build and run go service in a container

* Remove tabs

* Update Pet Store server sample

* Add {{{packageName}}} instead of petstore

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoServerCodegen.java

@@ -110,6 +110,7 @@ public class GoServerCodegen extends AbstractGoCodegen {
          */
         supportingFiles.add(new SupportingFile("openapi.mustache", "api", "openapi.yaml"));
         supportingFiles.add(new SupportingFile("main.mustache", "", "main.go"));
+        supportingFiles.add(new SupportingFile("Dockerfile.mustache", "", "Dockerfile"));
         supportingFiles.add(new SupportingFile("routers.mustache", apiPath, "routers.go"));
         supportingFiles.add(new SupportingFile("logger.mustache", apiPath, "logger.go"));
         writeOptional(outputFolder, new SupportingFile("README.mustache", apiPath, "README.md"));

modules/openapi-generator/src/main/resources/go-server/Dockerfile.mustache

@@ -0,0 +1,14 @@
+FROM golang:1.10 AS build
+WORKDIR /go/src
+COPY {{apiPath}} ./{{apiPath}}
+COPY main.go .
+
+ENV CGO_ENABLED=0
+RUN go get -d -v ./...
+
+RUN go build -a -installsuffix cgo -o {{packageName}} .
+
+FROM scratch AS runtime
+COPY --from=build /go/src/{{packageName}} ./
+EXPOSE 8080/tcp
+ENTRYPOINT ["./{{packageName}}"]

modules/openapi-generator/src/main/resources/go-server/README.mustache

@@ -28,3 +28,14 @@ To run the server, follow these simple steps:
 go run main.go
 ```
 
+To run the server in a docker container
+```
+docker build --network=host -t {{{packageName}}} .
+```
+
+Once image is built use
+```
+docker run --rm -it {{{packageName}}} 
+```
+
+

samples/server/petstore/go-api-server/.openapi-generator/VERSION

@@ -1 +1 @@
-3.0.0-SNAPSHOT
+3.0.1-SNAPSHOT

samples/server/petstore/go-api-server/Dockerfile

@@ -0,0 +1,14 @@
+FROM golang:1.10 AS build
+WORKDIR /go/src
+COPY go ./go
+COPY main.go .
+
+ENV CGO_ENABLED=0
+RUN go get -d -v ./...
+
+RUN go build -a -installsuffix cgo -o petstoreserver .
+
+FROM scratch AS runtime
+COPY --from=build /go/src/petstoreserver ./
+EXPOSE 8080/tcp
+ENTRYPOINT ["./petstoreserver"]

samples/server/petstore/go-api-server/go/README.md

@@ -1,16 +1,16 @@
 # Go API Server for petstoreserver
 
-This is a sample server Petstore server.  You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/).  For this sample, you can use the api key `special-key` to test the authorization filters.
+This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
 
 ## Overview
-This server was generated by the [swagger-codegen]
-(https://github.com/swagger-api/swagger-codegen) project.  
+This server was generated by the [openapi-generator]
+(https://openapi-generator.tech) project.
 By using the [OpenAPI-Spec](https://github.com/OAI/OpenAPI-Specification) from a remote server, you can easily generate a server stub.  
 -
 
 To see how to make this your own, look here:
 
-[README](https://github.com/swagger-api/swagger-codegen/blob/master/README.md)
+[README]((https://openapi-generator.tech))
 
 - API version: 1.0.0
 
@@ -22,3 +22,14 @@ To run the server, follow these simple steps:
 go run main.go
 ```
 
+To run the server in a docker container
+```
+docker build --network=host -t petstoreserver .
+```
+
+Once image is built use
+```
+docker run --rm -it petstoreserver 
+```
+
+