update deployment guide

deployment-guide.md

@@ -31,9 +31,19 @@ You can deploy your contracts and run an end-to-end test or demo as follows:
     export ETH_WALLET_PRIVATE_KEY=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
     export BONSAI_API_KEY="YOUR_API_KEY" # see form linked in the previous section
     export BONSAI_API_URL="BONSAI_API_URL" # provided with your api key
+    export RISC0_USE_DOCKER=1 # enable reproducible build via Docker
     ```
 
-3. Deploy your contract by running:
+    By setting *RISC0_USE_DOCKER=1* the build process will build your guest binary within a deterministic environment, resulting in a reproducible build. This is helpful because it allows third-parties to independently build the guest binary and generate the same [image ID]. For more details, see [reproducible build].
+    > ***Note:*** *This requires having Docker installed. To install Docker see [Get Docker](https://docs.docker.com/get-docker/).*
+
+3. Build your project:
+
+    ```bash
+    cargo build
+    ```
+
+4. Deploy your contract by running:
 
     ```bash
     forge script --rpc-url http://localhost:8545 --broadcast script/Deploy.s.sol
@@ -98,9 +108,19 @@ You can deploy your contracts on a testnet such as `Sepolia` and run an end-to-e
     export BONSAI_API_URL="BONSAI_API_URL" # provided with your api key
     export ALCHEMY_API_KEY="YOUR_ALCHEMY_API_KEY" # the API_KEY provided with an alchemy account
     export ETH_WALLET_PRIVATE_KEY="YOUR_WALLET_PRIVATE_KEY" # the private key of your Ethereum testnet wallet e.g., Sepolia
+     export RISC0_USE_DOCKER=1 # enable reproducible build via Docker
     ```
 
-2. Deploy your contract by running:
+    By setting *RISC0_USE_DOCKER=1* the build process will build your guest binary within a deterministic environment, resulting in a reproducible build. This is helpful because it allows third-parties to independently build the guest binary and generate the same [image ID]. For more details, see [reproducible build].
+    > ***Note:*** *This requires having Docker installed. To install Docker see [Get Docker](https://docs.docker.com/get-docker/).*
+
+2. Build your project:
+
+    ```bash
+    cargo build
+    ```
+
+3. Deploy your contract by running:
 
     ```bash
     forge script script/Deploy.s.sol --rpc-url https://eth-sepolia.g.alchemy.com/v2/${ALCHEMY_API_KEY:?} --broadcast
@@ -157,4 +177,6 @@ You can deploy your contracts on a testnet such as `Sepolia` and run an end-to-e
 [contracts]: ./contracts/
 [tested]: ./README.md#run-the-tests
 [Deploy your project to a local network]: #deploy-your-project-on-a-local-network
-[Deploy to a testnet]: #deploy-your-project-on-a-testnet
+[Deploy to a testnet]: #deploy-your-project-on-a-testnet
+[image ID]: https://dev.risczero.com/terminology#image-id
+[reproducible build]: TODO