Add missing Dockerfile and adapt the version passed to operator

Signed-off-by: Itxaka <[email protected]>

.github/workflows/docker.yaml

@@ -11,6 +11,12 @@ jobs:
         uses: actions/checkout@v2
         with:
           fetch-depth: 0
+      - name: Export tag
+        id: export_tag
+        run: |
+          git describe --abbrev=0 --tags
+          TAG=`git describe --abbrev=0 --tags 2>/dev/null || echo "v0.0.0"`
+          echo "::set-output name=operator_tag::$TAG"
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v3
@@ -37,4 +43,6 @@ jobs:
           cache-from: type=gha
           cache-to: type=gha,mode=max
           target: ros-operator
-          push: true
+          push: true
+          build-args: |
+            VERSION=${{ steps.export_tag.outputs.operator_tag }}

.github/workflows/e2e.yaml

@@ -21,15 +21,15 @@ jobs:
         id: export_tag
         run: |
           TAG=`git describe --abbrev=0 --tags 2>/dev/null || echo "v0.0.0"`
-          echo "::set-output name=ros_tag::$TAG"
+          echo "::set-output name=operator_tag::$TAG"
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v3
         with:
           images: |
             quay.io/costoolkit/elemental-operator-ci
           tags: |
-            type=sha,format=short,prefix=${{ steps.export_tag.outputs.ros_tag }}-
+            type=sha,format=short,prefix=${{ steps.export_tag.outputs.operator_tag }}-
       - name: Set up Docker Buildx
         id: buildx
         uses: docker/setup-buildx-action@v1
@@ -48,6 +48,8 @@ jobs:
           push: true
           cache-from: type=gha
           cache-to: type=gha,mode=max
+          build-args: |
+            VERSION=${{ steps.export_tag.outputs.operator_tag }}
       - name: Make chart
         run: make chart
       - name: Set chart output

.goreleaser.yaml

@@ -5,6 +5,7 @@ builds:
       - CGO_ENABLED=0
     ldflags:
       - -extldflags -static -s
+      - -X github.com/rancher/elemental-operator/version.Version={{.Tag}}
     goos:
       - linux
     goarch:

Dockerfile

@@ -0,0 +1,15 @@
+FROM golang:1.17-alpine as build
+ENV CGO_ENABLED=0
+WORKDIR /src
+COPY go.mod go.sum /src/
+RUN go mod download
+COPY main.go /src/
+COPY pkg /src/pkg
+COPY cmd /src/cmd
+# Set arg/env after go mod download, otherwise we invalidate the cached layers due to the commit changing easily
+ARG VERSION=0.0.0
+ENV VERSION=${VERSION}
+RUN go build -ldflags "-extldflags -static -s -X 'github.com/rancher/elemental-operator/version.Version=$(VERSION)'" -o /usr/sbin/rancheros-operator
+
+FROM scratch as ros-operator
+COPY --from=build /usr/sbin/rancheros-operator /usr/sbin/rancheros-operator