diff --git a/Dockerfile b/Dockerfile
index 1705e7a..8987432 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,26 +1,25 @@
 ARG VERSION="0.0.0-docker"
 
-ARG GO_VERSION=1.12
-ARG ALPINE_VERSION=3.9
+ARG GO_VERSION=1.13
 
-FROM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS builder
+FROM golang:${GO_VERSION}-alpine AS builder
 WORKDIR /go/src/github.com/syntaqx/serve
 
 RUN apk add --no-cache git ca-certificates
 ENV CGO_ENABLED=0 GO111MODULE=on
 
-ADD go.mod go.sum ./
+COPY go.* ./
 RUN go mod download
 
 COPY . /go/src/github.com/syntaqx/serve
-RUN go build -installsuffix cgo -ldflags '-s -w -X main.version=$VERSION' -o ./bin/serve ./cmd/serve
+RUN go install -ldflags "-X main.version=$VERSION" ./cmd/...
 
-FROM alpine:${ALPINE_VERSION}
+FROM alpine:3
 LABEL maintainer="Chase Pierce <syntaqx@gmail.com>"
 
-COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
-COPY --from=builder /go/src/github.com/syntaqx/serve/bin/serve /usr/bin/
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
 COPY --from=builder /go/src/github.com/syntaqx/serve/static /var/www
+COPY --from=builder /go/bin/serve /usr/bin/
 
 RUN addgroup -S serve \
   && adduser -D -S -s /sbin/nologin -G serve serve
@@ -28,5 +27,5 @@ USER serve
 
 VOLUME ["/var/www"]
 
-CMD ["serve", "-dir", "/var/www"]
 EXPOSE 8080
+CMD ["serve", "-dir", "/var/www"]
diff --git a/cmd/serve/main.go b/cmd/serve/main.go
index cc39d02..0caee14 100644
--- a/cmd/serve/main.go
+++ b/cmd/serve/main.go
@@ -14,6 +14,7 @@ var version = "0.0.0-develop"
 
 func main() {
 	var opt config.Flags
+	flag.BoolVar(&opt.Debug, "debug", false, "enable debug output")
 	flag.StringVar(&opt.Host, "host", "", "host address to bind to")
 	flag.StringVar(&opt.Port, "port", "8080", "listening port")
 	flag.BoolVar(&opt.EnableSSL, "ssl", false, "enable https")
diff --git a/internal/commands/server.go b/internal/commands/server.go
index 1f2c3ac..8cd99a6 100644
--- a/internal/commands/server.go
+++ b/internal/commands/server.go
@@ -67,8 +67,8 @@ func Server(log *log.Logger, opt config.Flags, dir string) error {
 		if err != nil {
 			log.Fatalf("unable to open users file %s", opt.UsersFile)
 		}
-	} else {
-		log.Printf("%s does not exist, no authentication required", opt.UsersFile)
+	} else if opt.Debug {
+		log.Printf("%s does not exist, authentication skipped", opt.UsersFile)
 	}
 
 	fs.Use(
diff --git a/internal/config/flags.go b/internal/config/flags.go
index 7c9bbc5..f9a8017 100644
--- a/internal/config/flags.go
+++ b/internal/config/flags.go
@@ -9,6 +9,7 @@ var getwd = os.Getwd
 
 // Flags are the expose configuration flags available to the serve binary.
 type Flags struct {
+	Debug     bool
 	Host      string
 	Port      string
 	EnableSSL bool