feat(oci): Add OCI image generation

Not fully tested but it should produce an image in ghcr.io

.github/workflows/build-oci.yaml

@@ -0,0 +1,38 @@
+name: Build OCI image
+
+on:
+  release:
+    types:
+      - published
+
+  push:
+    branches:
+      - "features/**"
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./oci/katenary/Containerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

.gitignore

@@ -30,3 +30,4 @@ __pycache__
 # local binaries
 katenary
 !cmd/katenary
+!oci/katenary

oci/katenary/Containerfile

@@ -0,0 +1,15 @@
+ARG GOVERSION=1.24
+
+FROM docker.io/golang:${GOVERSION} AS builder
+ARG VERSION=master
+RUN set -xe; \
+  CGO_ENABLED=0 go install -v github.com/katenary/katenary/cmd/katenary@$VERSION;
+
+FROM scratch
+LABEL org.opencontainers.image.source=https://github.com/katenary/katenary
+LABEL org.opencontainers.image.description="Katenary converts compose files to Helm Chart"
+LABEL org.opencontainers.image.licenses=MIT
+COPY --from=builder /go/bin/katenary /usr/local/bin/katenary
+VOLUME /project
+WORKDIR /project
+ENTRYPOINT ["/usr/local/bin/katenary"]