Merge pull request #46 from mritd/chore/docker

chore(docker): update dockerfile

.github/workflows/docker.yaml

@@ -0,0 +1,41 @@
+name: Build Docker Image
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out
+        uses: actions/checkout@v2
+
+      - name: Get tag
+        uses: olegtarasov/get-tag@v2
+        id: tagName
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: tobyxdd/hysteria:latest,tobyxdd/hysteria:${{ env.GIT_TAG_NAME }}
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}

Dockerfile

@@ -1,40 +1,30 @@
-FROM golang:1.14.7-alpine3.12 AS builder
+FROM golang:alpine AS builder
 
 LABEL maintainer="mritd <mritd@linux.com>"
 
-# The following parameters are used to set compilation information(such as compilation time,
-# commit id, etc.). Use "docker build --build-arg VERSION=1.1.1 ..." to set these parameters.
-# These parameters can be set automatically through CI Server.
-ARG VERSION="Unknown"
-ARG COMMIT="Unknown"
-ARG TIMESTAMP="Unknown"
-
 # GOPROXY is disabled by default, use:
 # docker build --build-arg GOPROXY="https://goproxy.io" ...
 # to enable GOPROXY.
 ARG GOPROXY=""
 
-ENV VERSION ${VERSION}
-ENV COMMIT ${COMMIT}
-ENV TIMESTAMP ${TIMESTAMP}
 ENV GOPROXY ${GOPROXY}
 
-# go mod is always enabled
-ENV GO111MODULE on
-
 COPY . /go/src/github.com/tobyxdd/hysteria
 
 WORKDIR /go/src/github.com/tobyxdd/hysteria/cmd
 
-# TODO: Is it necessary to remove "-w -s" to add debugging information?
 RUN set -ex \
+    && apk add git \
+    && export VERSION=$(git describe --tags) \
+    && export COMMIT=$(git rev-parse HEAD) \
+    && export TIMESTAMP=$(date "+%F %T") \
     && go build -o /go/bin/hysteria -ldflags \
         "-w -s -X 'main.appVersion=${VERSION}' \
         -X 'main.appCommit=${COMMIT}' \
         -X 'main.appDate=${TIMESTAMP}'"
 
 # multi-stage builds to create the final image
-FROM alpine:3.12 AS dist
+FROM alpine AS dist
 
 LABEL maintainer="mritd <mritd@linux.com>"
 
@@ -50,4 +40,4 @@ RUN set -ex \
 
 COPY --from=builder /go/bin/hysteria /usr/local/bin/hysteria
 
-ENTRYPOINT ["hysteria"]
+ENTRYPOINT ["hysteria"]