feat: add "[etherscan]" and "[rpc_endpoints]" configuration

docs: update deployment script usage in README
feat: add "INFURA_API_KEY", "ETHERSCAN_API_KEY"
refactor: replace "PRIVATE_KEY" with "MNEMONIC"

.env.example

@@ -1,2 +1,4 @@
-export ETH_RPC_URL="https://sepolia.infura.io/v3/INFURA_API_KEY"
-export PRIVATE_KEY="YOUR_PRIVATE_KEY"
+ETH_RPC_URL="https://goerli.infura.io/v3/INFURA_API_KEY"
+ETHERSCAN_API_KEY="YOUR_ETHERSCAN_API_KEY"
+INFURA_API_KEY="YOUR_INFURA_API_KEY"
+MNEMONIC="YOUR_MNEMONIC"

README.md

@@ -139,8 +139,7 @@ $ forge coverage
 Deploy to Anvil:
 
 ```sh
-$ forge script script/Foo.s.sol:FooScript --fork-url http://localhost:8545 \
- --broadcast --private-key $PRIVATE_KEY
+$ forge script script/Foo.s.sol --broadcast --fork-url http://localhost:8545
 ```
 
 For instructions on how to deploy to a testnet or mainnet, check out the

foundry.toml

@@ -1,5 +1,8 @@
 # Full reference https://github.com/foundry-rs/foundry/tree/master/config
 
+[etherscan]
+goerli = { key = "${ETHERSCAN_API_KEY}" }
+
 [fmt]
 bracket_spacing = true
 int_types = "long"
@@ -27,3 +30,6 @@ test = "test"
 fuzz = { runs = 10_000 }
 verbosity = 4
 
+[rpc_endpoints]
+localhost="http://localhost:8545"
+goerli="https://goerli.infura.io/v3/${INFURA_API_KEY}"