update dockerfile to be compatible with current go version

docker/Dockerfile

@@ -1,36 +1,19 @@
-FROM golang:1.17.5-alpine3.14 AS builder
+FROM golang:1.23-alpine3.20 AS builder
 
-WORKDIR /app
-
-RUN apk add --no-cache --virtual build-deps curl gcc
-
-COPY go.sum go.mod ./
-RUN --mount=type=cache,target=/go/pkg/mod/ \
-    go mod download -x
-
-COPY . .
-RUN --mount=type=cache,target=/go/pkg/mod/ \
-    --mount=type=bind,target=. \
-    go install -v ./cmd/...
-
-FROM alpine:3.18.4
+WORKDIR /src
 
-RUN apk add --no-cache tzdata
+COPY go.mod go.sum ./
+RUN go mod download -x
 
-ENV APP_USER=app \
-    APP_GROUP=app \
-    USER_ID=11999 \
-    GROUP_ID=11999
+COPY . ./
 
-RUN addgroup --system --gid ${GROUP_ID} ${APP_GROUP} \
-    && adduser --system --disabled-password --home /home/${APP_USER} \
-    --uid ${USER_ID} --ingroup ${APP_GROUP} ${APP_USER}
+RUN GOOS=linux GOARCH=amd64 go build -o /bin/rp-archiver ./cmd/rp-archiver/*.go
 
-COPY --from=builder --chown=${APP_USER}:${APP_GROUP} /go/bin/ /app/
+FROM alpine:3.20
 
 WORKDIR /app
 
-USER ${APP_USER}:${APP_GROUP}
+COPY --from=builder bin/rp-archiver ./
 
 EXPOSE 8080
 ENTRYPOINT ["./rp-archiver"]