Add release workflow for Helm Chart, basic documentation about installing it

Author: atishaninov-xometry

.github/workflows/release.yml

@@ -136,3 +136,28 @@ jobs:
           platforms: linux/amd64,linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+
+  publish-chart:
+    name: 🚀 Build and push Helm Chart
+    permissions:
+      contents: write
+    needs: [release]
+    runs-on: ubuntu-latest
+    env:
+      CHART_DIR: install/kubernetes
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: master
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "[email protected]"
+
+      - name: Run chart-releaser
+        uses: helm/[email protected]
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          charts_dir: "${{ env.CHART_DIR }}"

docs/content/1.getting-started/1.index.md

@@ -7,6 +7,8 @@ The cache server is available as a Docker image and can be deployed via Docker C
 
 ## 1. Deploying the Cache Server
 
+### Using Docker Compose
+
 ```yaml [docker-compose.yml]
 services:
   cache-server:
@@ -22,6 +24,55 @@ volumes:
   cache-data:
 ```
 
+### Using Kubernetes with Helm
+
+You can deploy the cache server in Kubernetes using the Helm chart hosted in a OCI repository.
+
+#### Prerequisites
+
+- Helm version 3.8.0 or later (required for OCI support).
+- A running Kubernetes cluster.
+
+#### Steps
+
+1. Add the Helm repository (if not already added):
+
+```bash
+helm repo add falcondev-oss oci://ghcr.io/falcondev-oss/charts
+helm repo update
+```
+
+2. Install the Helm chart:
+
+```bash
+helm install <release-name> falcondev-oss/github-actions-cache-server
+```
+
+Replace `<release-name>` with your desired release name (e.g., `cache-server`). This will deploy the cache server with all default values.
+
+3. Verify the deployment:
+
+```bash
+kubectl get deployments
+kubectl get svc
+```
+
+Ensure the deployment `<release-name>-github-actions-cache-server` is running and the service is accessible.
+
+#### Customizing the Deployment
+
+To customize the deployment, you can override the default values by creating a `values.yaml` file. 
+
+For all possible configuration options, refer to the [values.yaml file](https://github.com/falcondev-oss/github-actions-cache-server/blob/master/install/kubernetes/github-actions-cache-server/values.yaml).
+
+For more details on customizing Helm charts, see the [Customizing the Chart Before Installing](https://helm.sh/docs/intro/using_helm/#customizing-the-chart-before-installing).
+
+Then install the chart with your custom values:
+
+  ```bash
+  helm install <release-name> falcondev-oss/github-actions-cache-server -f values.yaml
+  ```
+
 ### Environment Variables
 
 #### `API_BASE_URL`