fix

dockerfile

@@ -7,13 +7,12 @@ FROM golang:alpine AS builder
 RUN apk update && apk add --no-cache 'git=~2'
 
 # Install dependencies
-ENV GO111MODULE=on
-WORKDIR $GOPATH/src/packages/goginapp/
-COPY . .
+COPY go.mod go.sum ./
+RUN go mod download
 
 # Fetch dependencies.
 # Using go get.
-RUN go get -d -v
+COPY . .
 
 # Build the binary.
 RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o /go/main .
@@ -21,7 +20,7 @@ RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o /go/main .
 ############################
 # STEP 2 build a small image
 ############################
-FROM alpine:3
+FROM alpine:latest
 
 WORKDIR /