Jp/simplify immutable setup (#671)

* Removed steps to setup and use an account for the node

* Removed openssl install

src/pages/validator/external-chains/immutable.mdx

@@ -12,11 +12,7 @@ Instructions to set up your Immutable zkEVM node.
 
 ## Prerequisites
 1. Install [Docker](https://docs.docker.com/engine/install/ubuntu/)
-2. Install `openssl`.
-```bash
-sudo apt-get install openssl
-```
-3. **(Optional)** If you plan to use WireGuard (see [Get access to the Immutable zkEVM partner nodes](#get-access-to-the-immutable-zkevm-partner-nodes)), install it.
+2. **(Optional)** If you plan to use WireGuard (see [Get access to the Immutable zkEVM partner nodes](#get-access-to-the-immutable-zkevm-partner-nodes)), install it.
 ```bash
 sudo apt-get install wireguard
 ```
@@ -113,31 +109,18 @@ The output should look something like this:
 mkdir /opt/immutable-zkevm
 ```
 
-2. Generate a random password.
-```bash
-openssl rand -base64 32 > /opt/immutable-zkevm/password
-```
-
-3. Pull the Docker image.
+2. Pull the Docker image.
 
 ```bash
 docker pull ghcr.io/immutable/go-ethereum/go-ethereum:v0.0.8
 # Create a short-form tag we can reference in the next few commands
 docker tag ghcr.io/immutable/go-ethereum/go-ethereum:v0.0.8 geth
 ```
 
-4. Initialise the node.
+3. Initialise the node.
 
 <tabs>
 <tab-item title="Testnet">
-```bash
-docker run \
-  --rm \
-  -v /opt/immutable-zkevm:/mnt/geth \
-  --name geth \
-  geth account new --datadir /mnt/geth --password /mnt/geth/password
-```
-
 ```bash
 docker run \
   --rm \
@@ -148,14 +131,6 @@ docker run \
 ```
 </tab-item>
 <tab-item title="Mainnet">
-```bash
-docker run \
-  --rm \
-  -v /opt/immutable-zkevm:/mnt/geth \
-  --name geth \
-  geth account new --datadir /mnt/geth --password /mnt/geth/password
-```
-
 ```bash
 docker run \
   --rm \
@@ -167,7 +142,7 @@ docker run \
 </tab-item>
 </tabs>
 
-5. Start the Immutable zkEVM node as a service
+4. Start the Immutable zkEVM node as a service
 
 <tabs>
 <tab-item title="Testnet">
@@ -181,7 +156,6 @@ docker run \
   geth \
   --config /etc/geth/testnet.toml \
   --datadir /mnt/geth \
-  --keystore /mnt/geth/keystore \
   --networkid 13473 \
   --http \
   --http.port "8545" \
@@ -199,7 +173,6 @@ docker run \
   geth \
   --config /etc/geth/mainnet.toml \
   --datadir /mnt/geth \
-  --keystore /mnt/geth/keystore \
   --networkid 13371 \
   --http \
   --http.port "8545" \