fix: use alpine to reduce image size

Author: theredrad

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.16
+FROM golang:1.16 AS build
 
 WORKDIR /app
 COPY go.mod go.sum ./
@@ -9,5 +9,13 @@ COPY . .
 
 RUN CGO_ENABLED=0 GOOS=linux go build -mod=readonly -a -ldflags "-w -s" -o ./bin/lorem main.go
 
+FROM alpine:3.15
+
+WORKDIR /app
+
+COPY --from=build /app/bin/lorem /app/lorem
+
+USER 1000:1000
+
 EXPOSE 8080
-ENTRYPOINT ["./bin/lorem"]
+ENTRYPOINT ["./lorem"]