DOC: Added Go dockerfile template (#553)

* sample-docker-templates added

* go dockerfile-template added

Author: Abhinav-26

sample-docker-templates/go/Dockerfile

@@ -0,0 +1,34 @@
+################################# Build Container ###############################
+
+FROM golang:1.16 as builder
+
+# Setup the working directory
+WORKDIR /app
+
+# Add source code
+ADD . /app/
+
+# Build the source
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main app.go
+
+
+################################# Prod Container #################################
+
+# Use a minimal alpine image
+FROM alpine:3.7
+
+# Add ca-certificates in case you need them
+RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
+
+# Set working directory
+WORKDIR /root
+
+# Copy the binary from builder
+COPY --from=builder /app/. .
+
+# Run the binary
+CMD ["./main"]
+
+
+
+