chore(scripts): add script to launch docker env for building (#357)

* chore(scripts): add script to launch docker env for building

* chore: remove unnecessary mounts

* fix(scripts): address PR feedback

Author: swimricky

README.md

@@ -84,6 +84,8 @@ This command runs a recent pyth-client docker image that already has the necessa
 Therefore, once the container is running, all you have to do is run `cd pyth-client && ./scripts/build.sh`.
 Note that updates to the `pyth-client` directory made inside the docker container will be persisted to the host filesystem (which is probably desirable).
 
+Alternatively, you can run `./scripts/start-docker-build-env.sh` && `cd pyth-client && cargo build --release`
+
 ### Fuzzing
 
 Build a docker image for running fuzz tests:

scripts/start-docker-build-env.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -o errexit -o nounset -o pipefail
+command -v shellcheck >/dev/null && shellcheck "$0"
+
+dir=$(pwd)
+export PYTH_REPO=${dir}
+echo "Mounting PYTH_REPO: ${PYTH_REPO}"
+
+# Use the latest oracle image from https://hub.docker.com/r/pythfoundation/pyth-client/tags?name=oracle
+LATEST_VERSION="v2.21.0"
+export IMAGE=pythfoundation/pyth-client:oracle-${LATEST_VERSION}
+echo "Using image: ${IMAGE}"
+
+docker run -it \
+        --mount "type=bind,src=${PYTH_REPO},target=/home/pyth/pyth-client" \
+        --platform linux/amd64 \
+        $IMAGE \
+        /bin/bash -l