Adding initial version of Dockerfile

Author: joanlopez

Dockerfile

@@ -0,0 +1,15 @@
+FROM golang:alpine AS build
+
+LABEL MAINTAINER = 'Friends of Go (it@friendsofgo.tech)'
+
+RUN apk add --update git
+WORKDIR /go/src/github.com/friendsofgo/graphiql
+COPY . .
+RUN TAG=$(git describe --tags --abbrev=0) \
+    && LDFLAGS=$(echo "-s -X main.version="$TAG) \
+    && go build -o /go/bin/graphiql -ldflags "$LDFLAGS" cmd/graphiql/main.go
+
+# Building image with the binary
+FROM alpine
+COPY --from=build /go/bin/graphiql /bin/
+ENTRYPOINT ["graphiql"]