Added mod tidy to go-swagger

Author: ttangsv

Dockerfile

@@ -7,23 +7,8 @@ RUN curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
 ARG SWAGGER_UI_VERSION=3.20.9
 
 RUN go get -d -v github.com/go-swagger/go-swagger \
-    && go get github.com/go-openapi/analysis \
-    && go get github.com/go-openapi/inflect \
-    && go get github.com/go-openapi/loads \
-    && go get github.com/go-openapi/spec \
-    && go get github.com/go-openapi/validate \
-    && go get github.com/gorilla/context \
-    && go get github.com/gorilla/handlers \
-    && go get github.com/jessevdk/go-flags \
-    && go get github.com/kr/pretty \
-    && go get github.com/pkg/errors \
-    && go get github.com/spf13/viper \
-    && go get github.com/toqueteos/webbrowser \
-    && go get github.com/tylerb/graceful \
-    && go get golang.org/x/net/context \
-    && go get golang.org/x/tools/go/ast/astutil \
-    && go get golang.org/x/tools/go/packages \
-    && go get golang.org/x/tools/imports \ 
+    && cd $GOPATH/src/github.com/go-swagger/go-swagger \
+    && go mod tidy \
     && go install github.com/go-swagger/go-swagger/cmd/swagger \
     && curl -sfL https://github.com/swagger-api/swagger-ui/archive/v$SWAGGER_UI_VERSION.tar.gz | tar xz -C /tmp/ \
     && mv /tmp/swagger-ui-$SWAGGER_UI_VERSION /tmp/swagger \