add docker

Dockerfile

@@ -1,21 +1,18 @@
-FROM ubuntu:latest
+FROM golang:1.18 as builder
 
-RUN apt-get update
-RUN apt-get install -y wget git gcc bash
-
-RUN wget -P /tmp https://dl.google.com/go/go1.18.linux-amd64.tar.gz
+WORKDIR /app
+COPY . /app
 
-RUN tar -C /usr/local -xzf /tmp/go1.18.linux-amd64.tar.gz
-RUN rm /tmp/go1.18.linux-amd64.tar.gz
+RUN go get -d -v
 
-ENV GOPATH /go
-ENV PATH $GOPATH/bin:/usr/local/go/bin:$PATH
-RUN mkdir -p "$GOPATH/src" "$GOPATH/bin" && chmod -R 777 "$GOPATH"
+# Statically compile our app for use in a distroless container
+RUN CGO_ENABLED=0 go build -ldflags="-w -s" -v -o app .
 
-RUN go version
+FROM debian:buster-slim
+RUN set -x && apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
+    ca-certificates git bash && \
+    rm -rf /var/lib/apt/lists/*
 
-WORKDIR /app
-COPY . /app/
+COPY --from=builder /app/app /app
 
-# Start app
-ENTRYPOINT ["go", "run", "/app/main.go"]
+ENTRYPOINT ["/app"]