専用リポジトリ作成後初のコミット

.github/workflows/build.yaml

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+name: Branch を Push したらイメージをビルドする
+
+on:
+  push:
+    branches:
+      - '*'         # matches every branch that doesn't contain a '/'
+      - '*/*'       # matches every branch containing a single '/'
+      - '**'        # matches every branch
+      - '!main'     # excludes main
+
+env:
+  IMAGE_NAME: my-ubuntu:dev
+
+jobs:
+  build-test-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Check go test
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+      - run: make test
+
+      - name: Check Dockerfile 
+        run: |
+          docker run --rm -i hadolint/hadolint < Dockerfile
+
+      - name: Build a image
+        id: push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: false
+          tags: ${{ env.IMAGE_NAME }}
+          labels: ${{ env.IMAGE_NAME }}
+
+      - name: Check vulnerabilities 
+        run: |
+          docker images
+          docker run -v /var/run/docker.sock:/var/run/docker.sock --rm aquasec/trivy image --no-progress ${{ env.IMAGE_NAME }}
+
+      - name: Test a container from the image
+        run: |
+          docker images
+          docker run -it --name test ${{ env.IMAGE_NAME }} ls -lR / 
+          docker ps -a
+
+

.github/workflows/release.yaml

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+name: タグを付与してリリースすると、イメージを作成する
+
+on:
+  release:
+    types: [published]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          platforms: linux/amd64,linux/arm64
+          labels: ${{ steps.meta.outputs.labels }}
+

Dockerfile

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+# syntax=docker/dockerfile:1
+FROM ubuntu:22.04
+
+# モジュールをインストール
+RUN apt-get update && apt-get install -y python3 python3-pip iputils-ping dnsutils curl iproute2 zip unzip groff
+RUN curl -LJO https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64
+RUN mv yq_linux_amd64 /usr/local/bin/yq
+RUN chmod a+x /usr/local/bin/yq
+RUN ARCH=`arch` && curl "https://awscli.amazonaws.com/awscli-exe-linux-$ARCH.zip" -o "awscliv2.zip" 
+RUN unzip awscliv2.zip && ./aws/install && rm /awscliv2.zip && rm -fr /aws
+WORKDIR /
+USER 65534:65534
+
+# コンテナの停止防止
+CMD ["tail", "-f", "/dev/null"]

README.md

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+# ビルド
+```
+docker build -t my-ubuntu:0.3 .
+```
+
+## コンテナへ入る
+```
+docker exec -it my-ubuntu:0.3 bash
+```
+
+## イメージをレジストリへ登録
+
+### GHCR
+```
+export CR_PAT=YOUR_TOKEN
+export USERNAME=YOUR USERID
+echo $CR_PAT | docker login ghcr.io -u $USERNAME --password-stdin
+docker tag my-ubuntu:0.3 ghcr.io/takara9/my-ubuntu:0.3
+docker push ghcr.io/takara9/my-ubuntu:0.3
+```
+
+### DockerHub
+```
+docker login
+docker tag my-ubuntu:0.3 maho/my-ubuntu:0.3
+docker push maho/my-ubuntu:0.3
+```
+
+
+## 使用法（どちらかを選択）
+- docker run -it my-ubuntu:0.3 bash
+- docker run -it ghcr.io/takara9/my-ubuntu:0.3 bash
+- docker run -it maho/my-ubuntu:0.3 bash
+- kubectl run -it mypod --rm --image maho/my-ubuntu:0.3 -- bash
+
+
+