github: action to refresh builder-alpine.${ALPINE_BRANCH} image

.github/dependabot.yml

@@ -0,0 +1,9 @@
+---
+version: 2
+updates:
+ - package-ecosystem: "github-actions"
+ directory: "/"
+ schedule:
+ interval: "weekly"
+ commit-message:
+ prefix: "github: [skip ci]"

.github/workflows/builder.yml

@@ -0,0 +1,53 @@
+---
+name: alpine docker builder image
+on:
+ push:
+ branches:
+ - master
+ # Allows you to run this workflow manually from the Actions tab
+ workflow_dispatch:
+
+env:
+ IMAGE_NAME: kamailio-ci
+ SOURCE_BRANCH: ${{ github.ref_name }}
+ DOCKER_REPO: ghcr.io/kamailio/kamailio-ci
+ REFRESH_ONLY: true
+
+jobs:
+ x86_64:
+ runs-on: ubuntu-latest
+ permissions:
+ contents: read
+ packages: write 
+ steps:
+ - uses: actions/checkout@v4
+ with:
+ fetch-depth: 2
+
+ - name: print latest_commit
+ run: echo ${{ github.sha }}
+
+ - name: Get changed files
+ id: changed-files
+ uses: tj-actions/changed-files@v39
+ with:
+ since_last_remote_commit: true
+
+ - name: Dockerfile.builder
+ id: changed-files-builder
+ uses: tj-actions/changed-files@v39
+ with:
+ files: alpine/Dockerfile.builder
+
+ - name: Login to GitHub Container Registry
+ if: steps.changed-files-builder.outputs.any_changed == 'true'
+ uses: docker/login-action@v3
+ with:
+ registry: ghcr.io
+ username: ${{ github.repository_owner }}
+ password: ${{ secrets.GITHUB_TOKEN }}
+
+ - name: generate builder
+ if: steps.changed-files-builder.outputs.any_changed == 'true'
+ run: |
+ ./hooks/pre_build

alpine/hooks/pre_build

@@ -5,19 +5,22 @@ set -x
 # Setting environment vars
 ALPINE_BRANCH="${ALPINE_BRANCH:-latest}"
 DOCKER_REPO="${DOCKER_REPO:-kamailio/kamailio-ci}"
+REFRESH_ONLY="${REFRESH_ONLY:-false}"
 
 if [ "$SOURCE_BRANCH" = "master" ];then
  ALPINE_BRANCH="edge"
 fi
 
 refresh_builder() {
- docker pull alpine:${ALPINE_BRANCH} || true
- docker pull ${DOCKER_REPO}:builder-alpine.${ALPINE_BRANCH} || true
- local SHA_ALPINE=$(docker image inspect -f '{{index .RootFS.Layers 0}}' alpine:${ALPINE_BRANCH})
- local SHA_BUILDER=$(docker image inspect -f '{{index .RootFS.Layers 0}}' ${DOCKER_REPO}:builder-alpine.${ALPINE_BRANCH})
- if [ "${SHA_ALPINE}" = "${SHA_BUILDER}" ]; then
- echo "Builder already use fresh alpine base image. Continue"
- return 0
+ docker pull alpine:${ALPINE_BRANCH}
+ if ! ${REFRESH_ONLY} ; then
+ docker pull ${DOCKER_REPO}:builder-alpine.${ALPINE_BRANCH}
+ local SHA_ALPINE=$(docker image inspect -f '{{index .RootFS.Layers 0}}' alpine:${ALPINE_BRANCH})
+ local SHA_BUILDER=$(docker image inspect -f '{{index .RootFS.Layers 0}}' ${DOCKER_REPO}:builder-alpine.${ALPINE_BRANCH})
+ if [ "${SHA_ALPINE}" = "${SHA_BUILDER}" ]; then
+ echo "Builder already use fresh alpine base image. Continue"
+ return 0
+ fi
  fi
  sed -i -e "s/alpine:latest/alpine:${ALPINE_BRANCH}/" Dockerfile.builder
  docker build -t ${DOCKER_REPO}:builder-alpine.${ALPINE_BRANCH} --file Dockerfile.builder .
@@ -29,6 +32,11 @@ refresh_builder() {
 echo "=> Refreshing builder image"
 refresh_builder
 
+if ${REFRESH_ONLY} ; then
+ echo "=> REFRESH_ONLY detected, done"
+ return 0
+fi
+
 echo "=> Build Kamailio source code"
 
 if [ "${ALPINE_BRANCH}" = "edge" ]; then