fix: Added a comment to clarify how to launch TXE (#7402)

Co-authored-by: sirasistant <sirasistant@gmail.com>

build_manifest.yml

@@ -70,6 +70,7 @@ noir-projects:
   dependencies:
     - noir
     - avm-transpiler
+    - barretenberg-x86_64-linux-clang
 
 # Compiles all aztec noir projects using nargo and the avm-transpiler, then tests them using the TXE.
 noir-projects-tests:

docs/docs/guides/smart_contracts/testing_contracts/index.md

@@ -34,7 +34,17 @@ So to summarize:
 
 ### Running TXE
 
-In order to use the TXE, it must be running on a known address. By default, TXE runs at `http://localhost:8080`. So you can run  contracts tests with:
+In order to use the TXE, it must be running on a known address. 
+
+:::tip
+If you have [the sandbox](../../../getting_started.md) installed, you can quickly deploy a TXE by running:
+
+`docker run --workdir /usr/src/yarn-project/txe/dest/bin --entrypoint node --name txe -p 8080:8080 aztecprotocol/aztec index.js`
+
+This will be improved in the future with a dedicated command.
+:::
+
+By default, TXE runs at `http://localhost:8080`. Using `aztec-nargo`, contract tests can be run with:
 
 `aztec-nargo test --oracle-resolver http://host.docker.internal:8080`
 

noir-projects/Dockerfile

@@ -1,9 +1,12 @@
 FROM aztecprotocol/noir as noir
 FROM aztecprotocol/avm-transpiler as transpiler
+FROM --platform=linux/amd64 aztecprotocol/barretenberg-x86_64-linux-clang as barretenberg
 
 FROM ubuntu:lunar AS builder
 RUN apt-get update && apt-get install -y parallel nodejs npm 
 RUN npm install --global yarn
+# Copy in bb
+COPY --from=barretenberg /usr/src/barretenberg/cpp/build/bin/bb /usr/src/barretenberg/cpp/build/bin/bb
 # Copy in nargo
 COPY --from=noir /usr/src/noir/noir-repo/target/release/nargo /usr/src/noir/noir-repo/target/release/nargo
 ENV PATH="/usr/src/noir/noir-repo/target/release:${PATH}"