contracts/ci: Update testing CI script and README

- We no longer need env variables to run tests. The deployment is now
  carried out by the default account. This is because we converted the
  production deployment script to use cast wallet instead of private keys
  passed through the .env

- The README was updated to include more info about deploying to local
  and production chains

.github/workflows/test-contracts.yml

@@ -39,9 +39,6 @@ jobs:
         id: build
 
       - name: Run Forge tests
-        env:
-          FOUNDRY_ENV: ${{ secrets.FOUNDRY_ENV }}
         run: |
-          echo $FOUNDRY_ENV > .env
           forge test -vvv
         id: test

contracts/README.md

@@ -20,4 +20,21 @@ $ forge test
 
 ```shell
 $ forge snapshot
+```
+
+### Deploy to Local Anvil (development) chain
+First start the anvil chain on a separate shell session
+```shell
+/contracts$ anvil 
+```
+Then deploy to it with the following command. It will use the default RPC used by anvil
+```shell
+# (Optional) sudo apt install make
+/contracts$ make deploy-dev
+```
+
+### Deploy to Production Chain
+```shell
+# (Optional) sudo apt install make
+/contracts$ make deploy-prod
 ```