Update Hornet docs to testnets

docs/maintain/hornet/2.0/docs/how_tos/using_docker.md

@@ -64,6 +64,13 @@ Once you have completed all the installation [requirements](#requirements), you
 mkdir node-docker-setup && cd node-docker-setup && curl -L https://node-docker-setup.iota.org/iota | tar -zx
 ```
 
+</TabItem>
+<TabItem value="iotatestnet" label="IOTA Testnet">
+
+```sh
+mkdir node-docker-setup && cd node-docker-setup && curl -L https://node-docker-setup.iota.org/iota-testnet | tar -zx
+```
+
 </TabItem>
 <TabItem value="shimmer" label="Shimmer">
 
@@ -72,10 +79,10 @@ mkdir node-docker-setup && cd node-docker-setup && curl -L https://node-docker-s
 ```
 
 </TabItem>
-<TabItem value="testnet" label="Testnet">
+<TabItem value="shimmer_testnet" label="Shimmer Testnet">
 
 ```sh
-mkdir node-docker-setup && cd node-docker-setup && curl -L https://node-docker-setup.iota.org/testnet | tar -zx
+mkdir node-docker-setup && cd node-docker-setup && curl -L https://node-docker-setup.iota.org/shimmer-testnet | tar -zx
 ```
 
 </TabItem>
@@ -133,6 +140,13 @@ Activating a Wasp node isn't enough to fully participate in a smart contract cha
 https://github.com/iotaledger/node-docker-setup/blob/main/iota/env_template
 ```
 
+</TabItem>
+<TabItem value="iota_testnet" label="IOTA Testnet">
+
+```sh reference
+https://github.com/iotaledger/node-docker-setup/blob/main/iota-testnet/env_template
+```
+
 </TabItem>
 <TabItem value="shimmer" label="Shimmer">
 
@@ -141,10 +155,10 @@ https://github.com/iotaledger/node-docker-setup/blob/main/shimmer/env_template
 ```
 
 </TabItem>
-<TabItem value="testnet" label="Testnet">
+<TabItem value="shimmer_testnet" label="Shimmer Testnet">
 
 ```sh reference
-https://github.com/iotaledger/node-docker-setup/blob/main/testnet/env_template
+https://github.com/iotaledger/node-docker-setup/blob/main/shimmer-testnet/env_template
 ```
 
 </TabItem>