feat: init flux ci image

.dockerignore

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+*

.github/workflows/build.yml

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+name: Build and publish container image
+
+on:
+  push:
+    branches: ["main"]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+  FLUX_VERSION: "v2.4.0"
+  KUSTOMIZE_VERSION: "v5.4.3"
+  KUBECONFORM_VERSION: "v0.6.7"
+  LABELS: |
+    org.opencontainers.image.description=Alpine image with flux-cli (${{ env.FLUX_VERSION }}), kustomize (${{ env.KUSTOMIZE_VERSION }}), and kubeconform (${{ env.KUBECONFORM_VERSION }})
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      - name: Get changed files
+        id: changed-files
+        uses: tj-actions/changed-files@v41
+        with:
+          files: |
+            Dockerfile
+            .github/workflows/**/*
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Log in to the Container registry
+        if: steps.changed-files.outputs.any_changed == 'true'
+        uses: docker/login-action@v1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        if: steps.changed-files.outputs.any_changed == 'true'
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=sha
+          labels: "${{ env.LABELS }}"
+          annotations: "${{ env.LABELS }}"
+        env:
+          DOCKER_METADATA_ANNOTATIONS_LEVELS: manifest,index
+
+      - name: Build and push Docker image
+        if: steps.changed-files.outputs.any_changed == 'true'
+        id: push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          build-args: |
+            FLUX_VERSION=${{ env.FLUX_VERSION }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          annotations: ${{ steps.meta.outputs.annotations }}
+
+      - name: Generate artifact attestation
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
+          subject-digest: ${{ steps.push.outputs.digest }}
+          push-to-registry: true

.github/workflows/release.yml

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+name: Release new version of container image
+
+on:
+  push:
+    tags: ["*"]
+  workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+  FLUX_VERSION: "v2.4.0"
+  KUSTOMIZE_VERSION: "v5.4.3"
+  KUBECONFORM_VERSION: "v0.6.7"
+  LABELS: |
+    org.opencontainers.image.description=Alpine image with flux-cli (${{ env.FLUX_VERSION }}), kustomize (${{ env.KUSTOMIZE_VERSION }}), and kubeconform (${{ env.KUBECONFORM_VERSION }})
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v1
+        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 }}
+          tags: |
+            type=ref,event=tag
+            type=raw,value=latest
+            type=sha
+          labels: "${{ env.LABELS }}"
+          annotations: "${{ env.LABELS }}"
+        env:
+          DOCKER_METADATA_ANNOTATIONS_LEVELS: manifest,index
+
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64
+          build-args: |
+            FLUX_VERSION=${{ env.FLUX_VERSION }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          annotations: ${{ steps.meta.outputs.annotations }}
+
+      - name: Generate artifact attestation
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
+          subject-digest: ${{ steps.push.outputs.digest }}
+          push-to-registry: true

Dockerfile

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+ARG FLUX_VERSION=latest
+ARG KUSTOMIZE_VERSION=latest
+ARG KUBECONFORM_VERSION=latest
+
+FROM fluxcd/flux-cli:${FLUX_VERSION} AS flux-cli
+FROM registry.k8s.io/kustomize/kustomize:${KUSTOMIZE_VERSION} AS kustomize
+FROM ghcr.io/yannh/kubeconform:${KUBECONFORM_VERSION} AS kubeconform
+
+FROM alpine:3.20
+ARG FLUX_VERSION
+ARG KUSTOMIZE_VERSION
+ARG KUBECONFORM_VERSION
+
+LABEL org.opencontainers.image.description "Alpine image with flux-cli (${FLUX_VERSION}), kustomize (${KUSTOMIZE_VERSION}) and kubeconform (${FLUX_VERSION})"
+
+COPY --from=flux-cli /usr/local/bin/flux /usr/local/bin/flux
+COPY --from=kustomize /app/kustomize /usr/local/bin/kustomize
+COPY --from=kubeconform /kubeconform /usr/local/bin/kubeconform
+
+RUN apk add --no-cache bash curl yq
+
+WORKDIR /build
+
+CMD [ "/bin/sh" ]

LICENSE

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+BSD 3-Clause License
+
+Copyright (c) 2024, Nimbolus
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# Container image for CI with flux-cli, kustomize, kubeconform
+
+Container image based on Alpine with flux-cli, kustomize, kubeconform.
+This image is useful for CI jobs requiring the different CLI tools.
+
+## How to start
+
+```sh
+podman run -it -v $PWD:/build \
+    ghcr.io/nimbolus/flux-ci-container
+```