Adds Docker publishing (#29)

Co-authored-by: Nick Schuch <[email protected]>

.github/workflows/publish.yml

@@ -0,0 +1,35 @@
+name: Publish Docker image
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  push_to_registry:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: previousnext/terraform-provider-k8s
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@3b5e8027fcad23fda98b2e3ac259d8d67585f671
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -0,0 +1,17 @@
+FROM golang:1.19-alpine3.17 as build
+
+RUN apk add make gcc musl-dev
+
+WORKDIR /go/src/github.com/previousnext/terraform-provider-k8s
+COPY . /go/src/github.com/previousnext/terraform-provider-k8s
+
+RUN go build -ldflags "-linkmode external -extldflags -static" -o terraform-provider-k8s
+
+FROM hashicorp/terraform:0.14.8 as run
+
+RUN apk add bash
+
+RUN mkdir -p /root/.terraform.d/plugins
+
+COPY --from=build /go/src/github.com/previousnext/terraform-provider-k8s/terraform-provider-k8s /root/.terraform.d/plugins/registry.terraform.io/previousnext/k8s/99.0.0/linux_amd64/terraform-provider-k8s_v99.0.0
+RUN chmod +x /root/.terraform.d/plugins/registry.terraform.io/*/*/*/linux_amd64/terraform-provider-*