Feat: use specific commit for Docker image (#298)

To avoid mismatching commit when re-running workflow builds

.github/workflows/docker-build.yml

@@ -12,9 +12,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout the code
-        uses: actions/checkout@v2
-
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v1
 
@@ -32,8 +29,10 @@ jobs:
         run: |
           if [[ $GITHUB_REF == refs/tags/* ]]; then
             echo ::set-output name=version::${GITHUB_REF#refs/tags/}
+            echo ::set-output name=ref::${GITHUB_REF#refs/tags/}
           else
             echo ::set-output name=version::snapshot
+            echo ::set-output name=ref::${{ github.sha }}
           fi
           echo ::set-output name=docker_platforms::linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
           echo ::set-output name=docker_image::${{ secrets.DOCKER_USERNAME }}/trojan-go
@@ -44,6 +43,7 @@ jobs:
           --output "type=image,push=true" \
           --tag "${{ steps.prepare.outputs.docker_image }}:${{ steps.prepare.outputs.version }}" \
           --tag "${{ steps.prepare.outputs.docker_image }}:latest" \
+          --build-arg REF=${ref} \
           --file Dockerfile .
 
   test:

.github/workflows/docker-nightly-build.yml

@@ -10,9 +10,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout the code
-        uses: actions/checkout@v2
-
       - name: Setup QEMU
         uses: docker/setup-qemu-action@v1
 
@@ -30,12 +27,14 @@ jobs:
         run: |
           echo ::set-output name=docker_platforms::linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
           echo ::set-output name=docker_image::${{ secrets.DOCKER_USERNAME }}/trojan-go
+          echo ::set-output name=ref::${{ github.sha }}
 
       - name: Build and push docker image
         run: |
           docker buildx build --platform ${{ steps.prepare.outputs.docker_platforms }} \
           --output "type=image,push=true" \
           --tag "${{ steps.prepare.outputs.docker_image }}:nightly" \
+          --build-arg REF=${ref} \
           --file Dockerfile .
 
   test:

Dockerfile

@@ -1,8 +1,16 @@
 FROM golang:alpine AS builder
 WORKDIR /
+ARG REF
 RUN apk add git make &&\
-    git clone https://github.com/p4gefau1t/trojan-go.git &&\
-    cd trojan-go &&\
+    git clone https://github.com/p4gefau1t/trojan-go.git
+RUN if [[ -z "${REF}" ]]; then \
+        echo "No specific commit provided, use the latest one." \
+    ;else \
+        echo "Use commit ${REF}" &&\
+        cd trojan-go &&\
+        git checkout ${REF} \
+    ;fi
+RUN cd trojan-go &&\
     make &&\
     wget https://github.com/v2fly/domain-list-community/raw/release/dlc.dat -O build/geosite.dat &&\
     wget https://github.com/v2fly/geoip/raw/release/geoip.dat -O build/geoip.dat