docs: add Helm chart installation

Signed-off-by: Krypton <root@krypton.ninja>

Author: kkrypt0nn

web/docs/installation.mdx

@@ -56,6 +56,8 @@ Both checks are required before proceeding with the installation.
 
 import { InstallationSnippet } from '@site/src/components/Installation';
 
+### Directly using the manifest
+
 Install the plugin using `kubectl` by applying the manifest for the latest
 release:
 
@@ -98,6 +100,18 @@ deployment "barman-cloud" successfully rolled out
 
 This confirms that the plugin is deployed and ready to use.
 
+### Using the Helm Chart
+
+The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
+
+```sh
+helm repo add cnpg https://cloudnative-pg.github.io/charts
+helm upgrade --install barman-cloud \
+  --namespace cnpg-system \
+  --create-namespace \
+  cnpg/plugin-barman-cloud
+```
+
 ## Testing the latest development snapshot
 
 You can also test the latest development snapshot of the plugin with the

web/docs/troubleshooting.md

@@ -485,14 +485,10 @@ If problems persist:
 
 ### Plugin Limitations
 
-1. **Installation method**: Currently only supports manifest and Kustomize
-   installation ([#351](https://github.com/cloudnative-pg/plugin-barman-cloud/issues/351) -
-   Helm chart requested)
-
-2. **Sidecar resource sharing**: The plugin sidecar container shares pod
+1. **Sidecar resource sharing**: The plugin sidecar container shares pod
    resources with PostgreSQL
 
-3. **Plugin restart behavior**: Restarting the sidecar container requires
+2. **Plugin restart behavior**: Restarting the sidecar container requires
    restarting the entire PostgreSQL pod
 
 ## Recap of General Debugging Steps
@@ -588,4 +584,3 @@ kubectl get secret -n <namespace> <secret-name> -o jsonpath='{.data}' | jq 'keys
 * **"NoSuchBucket"** — Verify the bucket exists and the endpoint URL is correct.
 * **"Connection timeout"** — Check network connectivity and firewall rules.
 * **"SSL certificate problem"** — For self-signed certificates, verify the CA bundle configuration.
-

web/versioned_docs/version-0.10.0/installation.mdx

@@ -56,6 +56,8 @@ Both checks are required before proceeding with the installation.
 
 import { InstallationSnippet } from '@site/src/components/Installation';
 
+### Directly using the manifest
+
 Install the plugin using `kubectl` by applying the manifest for the latest
 release:
 
@@ -98,6 +100,19 @@ deployment "barman-cloud" successfully rolled out
 
 This confirms that the plugin is deployed and ready to use.
 
+### Using the Helm Chart
+
+The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
+
+```sh
+helm repo add cnpg https://cloudnative-pg.github.io/charts
+helm upgrade --install barman-cloud \
+  --namespace cnpg-system \
+  --create-namespace \
+  --version 0.4.0 \
+  cnpg/plugin-barman-cloud
+```
+
 ## Testing the latest development snapshot
 
 You can also test the latest development snapshot of the plugin with the

web/versioned_docs/version-0.10.0/troubleshooting.md

@@ -485,14 +485,10 @@ If problems persist:
 
 ### Plugin Limitations
 
-1. **Installation method**: Currently only supports manifest and Kustomize
-   installation ([#351](https://github.com/cloudnative-pg/plugin-barman-cloud/issues/351) -
-   Helm chart requested)
-
-2. **Sidecar resource sharing**: The plugin sidecar container shares pod
+1. **Sidecar resource sharing**: The plugin sidecar container shares pod
    resources with PostgreSQL
 
-3. **Plugin restart behavior**: Restarting the sidecar container requires
+2. **Plugin restart behavior**: Restarting the sidecar container requires
    restarting the entire PostgreSQL pod
 
 ## Recap of General Debugging Steps
@@ -588,4 +584,3 @@ kubectl get secret -n <namespace> <secret-name> -o jsonpath='{.data}' | jq 'keys
 * **"NoSuchBucket"** — Verify the bucket exists and the endpoint URL is correct.
 * **"Connection timeout"** — Check network connectivity and firewall rules.
 * **"SSL certificate problem"** — For self-signed certificates, verify the CA bundle configuration.
-

web/versioned_docs/version-0.11.0/installation.mdx

@@ -56,6 +56,8 @@ Both checks are required before proceeding with the installation.
 
 import { InstallationSnippet } from '@site/src/components/Installation';
 
+### Directly using the manifest
+
 Install the plugin using `kubectl` by applying the manifest for the latest
 release:
 
@@ -98,6 +100,19 @@ deployment "barman-cloud" successfully rolled out
 
 This confirms that the plugin is deployed and ready to use.
 
+### Using the Helm Chart
+
+The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
+
+```sh
+helm repo add cnpg https://cloudnative-pg.github.io/charts
+helm upgrade --install barman-cloud \
+  --namespace cnpg-system \
+  --create-namespace \
+  --version 0.5.0 \
+  cnpg/plugin-barman-cloud
+```
+
 ## Testing the latest development snapshot
 
 You can also test the latest development snapshot of the plugin with the

web/versioned_docs/version-0.11.0/troubleshooting.md

@@ -485,14 +485,10 @@ If problems persist:
 
 ### Plugin Limitations
 
-1. **Installation method**: Currently only supports manifest and Kustomize
-   installation ([#351](https://github.com/cloudnative-pg/plugin-barman-cloud/issues/351) -
-   Helm chart requested)
-
-2. **Sidecar resource sharing**: The plugin sidecar container shares pod
+1. **Sidecar resource sharing**: The plugin sidecar container shares pod
    resources with PostgreSQL
 
-3. **Plugin restart behavior**: Restarting the sidecar container requires
+2. **Plugin restart behavior**: Restarting the sidecar container requires
    restarting the entire PostgreSQL pod
 
 ## Recap of General Debugging Steps
@@ -588,4 +584,3 @@ kubectl get secret -n <namespace> <secret-name> -o jsonpath='{.data}' | jq 'keys
 * **"NoSuchBucket"** — Verify the bucket exists and the endpoint URL is correct.
 * **"Connection timeout"** — Check network connectivity and firewall rules.
 * **"SSL certificate problem"** — For self-signed certificates, verify the CA bundle configuration.
-

web/versioned_docs/version-0.12.0/installation.mdx

@@ -56,6 +56,8 @@ Both checks are required before proceeding with the installation.
 
 import { InstallationSnippet } from '@site/src/components/Installation';
 
+### Directly using the manifest
+
 Install the plugin using `kubectl` by applying the manifest for the latest
 release:
 
@@ -98,6 +100,19 @@ deployment "barman-cloud" successfully rolled out
 
 This confirms that the plugin is deployed and ready to use.
 
+### Using the Helm Chart
+
+The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
+
+```sh
+helm repo add cnpg https://cloudnative-pg.github.io/charts
+helm upgrade --install barman-cloud \
+  --namespace cnpg-system \
+  --create-namespace \
+  --version 0.6.0 \
+  cnpg/plugin-barman-cloud
+```
+
 ## Testing the latest development snapshot
 
 You can also test the latest development snapshot of the plugin with the

web/versioned_docs/version-0.12.0/troubleshooting.md

@@ -485,14 +485,10 @@ If problems persist:
 
 ### Plugin Limitations
 
-1. **Installation method**: Currently only supports manifest and Kustomize
-   installation ([#351](https://github.com/cloudnative-pg/plugin-barman-cloud/issues/351) -
-   Helm chart requested)
-
-2. **Sidecar resource sharing**: The plugin sidecar container shares pod
+1. **Sidecar resource sharing**: The plugin sidecar container shares pod
    resources with PostgreSQL
 
-3. **Plugin restart behavior**: Restarting the sidecar container requires
+2. **Plugin restart behavior**: Restarting the sidecar container requires
    restarting the entire PostgreSQL pod
 
 ## Recap of General Debugging Steps
@@ -588,4 +584,3 @@ kubectl get secret -n <namespace> <secret-name> -o jsonpath='{.data}' | jq 'keys
 * **"NoSuchBucket"** — Verify the bucket exists and the endpoint URL is correct.
 * **"Connection timeout"** — Check network connectivity and firewall rules.
 * **"SSL certificate problem"** — For self-signed certificates, verify the CA bundle configuration.
-

web/versioned_docs/version-0.5.0/installation.mdx

@@ -56,6 +56,8 @@ Both checks are required before proceeding with the installation.
 
 import { InstallationSnippet } from '@site/src/components/Installation';
 
+### Directly using the manifest
+
 Install the plugin using `kubectl` by applying the manifest for the latest
 release:
 
@@ -98,6 +100,19 @@ deployment "barman-cloud" successfully rolled out
 
 This confirms that the plugin is deployed and ready to use.
 
+### Using the Helm Chart
+
+The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
+
+```sh
+helm repo add cnpg https://cloudnative-pg.github.io/charts
+helm upgrade --install barman-cloud \
+  --namespace cnpg-system \
+  --create-namespace \
+  --version 0.1.0 \
+  cnpg/plugin-barman-cloud
+```
+
 ## Testing the latest development snapshot
 
 You can also test the latest development snapshot of the plugin with the

web/versioned_docs/version-0.7.0/installation.mdx

@@ -56,6 +56,8 @@ Both checks are required before proceeding with the installation.
 
 import { InstallationSnippet } from '@site/src/components/Installation';
 
+### Directly using the manifest
+
 Install the plugin using `kubectl` by applying the manifest for the latest
 release:
 
@@ -98,6 +100,19 @@ deployment "barman-cloud" successfully rolled out
 
 This confirms that the plugin is deployed and ready to use.
 
+### Using the Helm Chart
+
+The plugin can be installed using the provided [Helm chart](https://github.com/cloudnative-pg/charts/tree/main/charts/plugin-barman-cloud):
+
+```sh
+helm repo add cnpg https://cloudnative-pg.github.io/charts
+helm upgrade --install barman-cloud \
+  --namespace cnpg-system \
+  --create-namespace \
+  --version 0.2.0 \
+  cnpg/plugin-barman-cloud
+```
+
 ## Testing the latest development snapshot
 
 You can also test the latest development snapshot of the plugin with the