Improve Docker Build & smaler Fixes

.dockerignore

@@ -0,0 +1,7 @@
+.git*
+bin
+.vscode
+LICENSE
+README.md
+records-example.json
+build.sh

.github/workflows/CI.yml

@@ -0,0 +1,45 @@
+name: CI
+
+on:
+  push:
+    branches: ["*"]
+  pull_request:
+    branches: ["*"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+
+      - name: Build
+        run: ./build.sh
+
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.17
+
+      - name: Test
+        run: go test -v ./...
+
+  docker:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Build the Docker image
+        run: docker build . --file Dockerfile --tag go-nameserver:$(date +%s)

.gitignore

@@ -1 +1,3 @@
 .vscode/
+vendor/
+bin/

Dockerfile

@@ -1,11 +1,24 @@
-FROM debian:stable-slim
+FROM golang:1.14 as builder
+
+WORKDIR /tmp/proj/
+ENV GOBIN="$(pwd)/bin"
+ENV CGO_ENABLED=0
+
+COPY . ./
+
+RUN go build -o ./bin/go-nameserver -tags netgo -a
+#RUN go install
+
+FROM debian:stable-slim as runtime
 
 RUN apt-get update \
     && apt-get install -y --no-install-recommends net-tools iputils-ping \
-    && apt-get clean && rm -rf /var/lib/apt/lists/*
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
 
-ADD bin/go-nameserver /go-nameserver
+COPY --from=builder /tmp/proj/bin/go-nameserver /go-nameserver
 
-EXPOSE 53
+EXPOSE 53/udp
+EXPOSE 53/tcp
 
 ENTRYPOINT ["/go-nameserver"]

build.cmd

@@ -0,0 +1,7 @@
+@echo off
+
+set GOBIN=%~dp0bin\
+set CGO_ENABLED=0
+
+go build -o %~dp0bin\go-nameserver.exe -tags netgo -a
+::go install

build.sh

@@ -3,5 +3,5 @@
 export GOBIN="$(pwd)/bin"
 export CGO_ENABLED=0
 
-go build -tags netgo -a
-go install
+go build -o $GOBIN -tags netgo -a
+#go install

dns/util.go

@@ -11,13 +11,13 @@ import (
 
 // UtilPingHost ..
 func UtilPingHost(host string, maxSeconds int) bool {
-	cmd := fmt.Sprintf("ping %s -c 1 -w %d > /dev/null && echo reacheable || echo 0", host, maxSeconds)
+	cmd := fmt.Sprintf("ping %s -c 1 -w %d > /dev/null && echo reachable || echo 0", host, maxSeconds)
 	output, err := exec.Command("/bin/sh", "-c", cmd).Output()
 	if err != nil {
 		log.Print(err)
 		return false
 	}
-	isReachable := strings.HasPrefix(string(output), "reacheable")
+	isReachable := strings.HasPrefix(string(output), "reachable")
 	log.Printf("Ping %s: %t", host, isReachable)
 	return isReachable
 }