Build with GitHub actions; multi-arch Docker image

Author: alexei-led

.github/workflows/build.yaml

@@ -0,0 +1,52 @@
+name: DockerHub
+
+on:
+  push:
+    branches:
+      - '*'
+    tags:
+      - '*'
+
+jobs:
+
+  build:
+ 
+    runs-on: ubuntu-18.04
+ 
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Get util-linux version
+      id: get_util_linux
+      run: |
+        version=$(curl --silent https://api.github.com/repos/karelzak/util-linux/tags | jq -r '.[0].name' | sed -e 's/^v//')
+        echo "::debug::get util-linux version ${version}"
+        echo "::set-output name=version::${version}"
+
+    - 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.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_TOKEN }}
+
+    - name: Build and push Docker image
+      id: docker_build
+      uses: docker/build-push-action@v2
+      with:
+        build-args: UTIL_LINUX_VER=${{ steps.get_util_linux.outputs.version }}
+        platforms: linux/amd64,linux/arm64
+        tags: |
+          ${{ secrets.DOCKER_USERNAME }}/nsenter:${{ steps.get_util_linux.outputs.version }}
+          ${{ secrets.DOCKER_USERNAME }}/nsenter:latest
+        push: true
+
+    - name: Image digest
+      run: echo ${{ steps.docker_build.outputs.digest }}
+
+ 

.github/workflows/cron.yaml

@@ -0,0 +1,36 @@
+name: Tag on Util-Linux Release
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+    #- cron: "*/5 * * * *" uncomment for debug (every 5 min)
+
+jobs:
+  check_release:
+
+    runs-on: ubuntu-18.04
+
+    steps:
+    - name: Get latest repository tag
+      id: get_latest_tag
+      run: |
+        tag=$(curl --silent https://api.github.com/repos/${GITHUB_REPOSITORY}/git/refs/tags | jq -r '.[-1].ref' | awk -F/ '{print $NF}')
+        echo "::debug::git repository tag ${tag}"
+        echo "::set-output name=tag::${tag}"
+      
+    - name: Get util-linux version
+      id: get_util_linux
+      run: |
+        version=$(curl --silent https://api.github.com/repos/karelzak/util-linux/tags | jq -r '.[0].name' | sed -e 's/^v//')
+        echo "::debug::get util-linux version ${version}"
+        echo "::set-output name=version::${version}"
+
+    - name: Tag repository with latest util-linux version, if needed
+      id: tag_repository
+      if: steps.get_latest_tag.outputs.tag != steps.get_util_linux.outputs.version
+      uses: tvdias/github-tagger@v0.0.1
+      with:
+        repo-token: ${{ secrets.CR_PAT }}
+        tag: ${{steps.get_util_linux.outputs.version}}
+
+        

Dockerfile

@@ -6,7 +6,7 @@ RUN apt-get update && apt-get install -yq make gcc gettext autopoint bison libto
 WORKDIR /code
 
 # download util-linux sources
-ENV UTIL_LINUX_VER=2.34
+ARG UTIL_LINUX_VER
 ADD https://github.com/karelzak/util-linux/archive/v${UTIL_LINUX_VER}.tar.gz .
 RUN tar -xf v${UTIL_LINUX_VER}.tar.gz && mv util-linux-${UTIL_LINUX_VER} util-linux
 

nsenter-node.sh

@@ -18,7 +18,7 @@ kubectl run ${podName:?} --restart=Never -it --rm --image overriden --overrides
     "containers": [
       {
         "name": "nsenter",
-        "image": "alexeiled/nsenter:2.34",
+        "image": "alexeiled/nsenter",
         "command": [
           "/nsenter", "--all", "--target=1", "--", "su", "-"
         ],