Mention system requirements in quick-start and single-cluster installation guides

Author: VajiraPrabuddhaka

docs/getting-started/quick-start-guide.mdx

@@ -15,10 +15,33 @@ When you're done, you can fully clean up the setup, leaving your machine clutter
 
 ### Prerequisites
 
-To get started, you’ll need:
+To get started, you'll need:
 
 - **Docker** – Just have it installed on your machine, and you're good to go.
     - We recommend using [Docker Engine version 26.0+](https://docs.docker.com/engine/release-notes/26.0/).
+- **System Requirements** (for your Docker environment or VM running Docker):
+    - **Minimum**: 4GB memory & 2 CPU cores.
+    - **Recommended**: 8GB memory & 4 CPU cores.
+
+        :::tip
+        You can check the available memory and allocated CPU cores in your docker environment using the following command.
+            ```bash
+            docker run --pull=always --rm alpine:latest sh -c "echo 'Memory:'; free -h; echo; echo 'CPU Cores:'; nproc"
+            ```
+        Sample output:
+        ```text
+        Memory:
+                    total        used        free      shared  buff/cache   available
+        Mem:           3.8G        2.3G       78.6M      632.0M        1.5G      790.0M
+        Swap:             0           0           0
+
+        CPU Cores:
+        2
+        ```
+        :::important
+        You must have at least 2GB memory available (see the `available` column in the command output above) to install OpenChoreo.
+        :::
+
 - **5–10 minutes of your time** – Setup is quick and depends on your internet connection speed.
 
 ## Start the Dev Container

docs/getting-started/single-cluster.mdx

@@ -13,10 +13,37 @@ This guide provides step-by-step instructions for setting up a local development
 
 ## Prerequisites
 
-- [Docker](https://docs.docker.com/get-docker/) v20.10+ installed and running
-- [Kind](https://kind.sigs.k8s.io/docs/user/quick-start/#installation) v0.20+ installed
-- [kubectl](https://kubernetes.io/docs/tasks/tools/) v1.32+ installed
-- [Helm](https://helm.sh/docs/intro/install/) v3.12+ installed
+- **Docker** – Just have it installed on your machine, and you're good to go.
+    - We recommend using [Docker Engine version 26.0+](https://docs.docker.com/engine/release-notes/26.0/).
+- **[Kind](https://kind.sigs.k8s.io/docs/user/quick-start/#installation)** v0.20+ installed
+- **[kubectl](https://kubernetes.io/docs/tasks/tools/)** v1.32+ installed
+- **[Helm](https://helm.sh/docs/intro/install/)** v3.12+ installed
+- **System Requirements** (for your Docker environment or VM running Docker):
+    - **Minimum**: 4GB memory & 2 CPU cores.
+    - **Recommended**: 8GB memory & 4 CPU cores.
+
+      :::note
+      If you are installing [observability plane](#7-install-openchoreo-observability-plane-optional) you would need at least 8GB memory & 4 CPU cores.
+      :::
+
+      :::tip
+      You can check the available memory and allocated CPU cores in your docker environment using the following command.
+          ```bash
+          docker run --pull=always --rm alpine:latest sh -c "echo 'Memory:'; free -h; echo; echo 'CPU Cores:'; nproc"
+          ```
+      Sample output:
+      ```text
+      Memory:
+                    total        used        free      shared  buff/cache   available
+      Mem:           3.8G        2.3G       78.6M      632.0M        1.5G      790.0M
+      Swap:             0           0           0
+
+      CPU Cores:
+      2
+      ```
+      :::important
+      You must have at least 2GB memory available (see the `available` column in the command output above) to install OpenChoreo.
+      :::
 
 ### Verify Prerequisites