diff --git a/stack/fixturenet-optimism/README.md b/stack/fixturenet-optimism/README.md
index 0d5c0e8..308ab39 100644
--- a/stack/fixturenet-optimism/README.md
+++ b/stack/fixturenet-optimism/README.md
@@ -154,7 +154,7 @@ docker logs -f <CONTAINER_ID>
 
 Send some ETH from the desired account to the `L1StandardBridgeProxy` contract on L1 to test bridging to L2.
 
-We can use the testing account `0xe6CE22afe802CAf5fF7d3845cec8c736ecc8d61F` which is pre-funded and unlocked, and the `cerc/foundry:local` container to make use of the `cast` cli.
+We can use the testing account `0xe6CE22afe802CAf5fF7d3845cec8c736ecc8d61F` which is pre-funded and unlocked, and the `cerc/optimism-contracts:local` container to make use of the `cast` cli.
 
 1. Note the docker network the stack is running on:
 
@@ -173,16 +173,22 @@ We can use the testing account `0xe6CE22afe802CAf5fF7d3845cec8c736ecc8d61F` whic
   ACCOUNT=0xe6CE22afe802CAf5fF7d3845cec8c736ecc8d61F
   ```
 
+  You can create an alias for running `cast` on the network:
+
+  ```bash
+  alias op-cast="docker run --rm --network $NETWORK --entrypoint cast cerc/optimism-contracts:local"
+  ```
+
   If you need to check the L1 chain-id, you can use:
 
   ```bash
-  docker run --rm --network $NETWORK cerc/optimism-contracts:local "cast chain-id --rpc-url $L1_RPC"
+  op-cast chain-id --rpc-url $L1_RPC
   ```
 
 3. Check the account starting balance on L2 (it should be 0):
 
   ```bash
-  docker run --rm --network $NETWORK cerc/optimism-contracts:local "cast balance $ACCOUNT --rpc-url $L2_RPC"
+  op-cast balance $ACCOUNT --rpc-url $L2_RPC
   # 0
   ```
 
@@ -191,8 +197,8 @@ We can use the testing account `0xe6CE22afe802CAf5fF7d3845cec8c736ecc8d61F` whic
   ```bash
   # get the container id for op-node
   NODE_CONTAINER=$(docker ps --filter "name=op-node" -q)
+  # get the bridge contract address
   BRIDGE=$(docker exec $NODE_CONTAINER cat /l1-deployment/$DEPLOYMENT_CONTEXT-deploy.json | jq -r .L1StandardBridgeProxy)
-
   # get the funded account's pk
   ACCOUNT_PK=$(docker exec $NODE_CONTAINER jq -r '.AdminKey' /l2-accounts/accounts.json)
   ```
@@ -200,15 +206,15 @@ We can use the testing account `0xe6CE22afe802CAf5fF7d3845cec8c736ecc8d61F` whic
 5. Use cast to send some ETH to the bridge contract:
 
   ```bash
-  docker run --rm --network $NETWORK cerc/optimism-contracts:local "cast send --from $ACCOUNT --value 1ether $BRIDGE --rpc-url $L1_RPC --private-key $ACCOUNT_PK"
+  op-cast send --from $ACCOUNT --value 1ether $BRIDGE --rpc-url $L1_RPC --private-key $ACCOUNT_PK
   ```
 
-6. Allow a couple minutes for the bridge to complete
+6. Allow a couple minutes for the bridge to complete.
 
 7. Check the L2 balance again (it should show the bridged funds):
 
   ```bash
-  docker run --rm --network $NETWORK cerc/optimism-contracts:local "cast balance $ACCOUNT --rpc-url $L2_RPC"
+  op-cast balance $ACCOUNT --rpc-url $L2_RPC
   # 1000000000000000000
   ```