ci: add build and publish docker image

.github/workflows/docker.yml

@@ -0,0 +1,44 @@
+name: Build and public docker image
+
+on:
+  push:
+    branches: "master"
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    # run only when code is compiling and tests are passing
+    if: "!contains(github.event.head_commit.message, '[skip ci]') && !contains(github.event.head_commit.message, '[ci skip]')"
+    # steps to perform in job
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          submodules: 'recursive'
+
+      # setup Docker buld action
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Github Packages
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build image and push to GitHub Container Registry
+        uses: docker/build-push-action@v2
+        with:
+          # relative path to the place where source code with Dockerfile is located
+          context: ./
+          file: Dockerfile
+          platforms: linux/amd64
+          # Note: tags has to be all lower-case
+          tags: |
+            ghcr.io/${{ github.repository_owner }}/bpftime:latest
+          push: true
+
+      - name: Image digest
+        run: echo ${{ steps.docker_build.outputs.digest }}

Dockerfile

@@ -2,11 +2,11 @@ FROM ubuntu:23.04
 WORKDIR /bpftime
 RUN apt-get update && apt install -y --no-install-recommends \
         libelf1 libelf-dev zlib1g-dev make cmake git libboost1.74-all-dev \
-        binutils-dev libyaml-cpp-dev  gcc-12 g++-12 ca-certificates clang llvm
+        binutils-dev libyaml-cpp-dev  gcc g++ ca-certificates clang llvm
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
 COPY . .
 RUN git submodule update --init --recursive
-ENV CXX=g++-12
-ENV CC=gcc-12
+ENV CXX=g++
+ENV CC=gcc
 RUN make release