[BUG] Container build images out of sync

[jordan-rash]

Describe the bug On 5/23, Alpine Linux release v3.16 which is now default for alpine:latest. The Dockerfile for wash currently builds from rust:alpine which is v3.15 of Alpine. This is causing a shared object issue on the final build artifact (wasmcloud/wash:alpine)

I have rebuilted locally and when pinning the build container to rust:alpine3.15 and the final container to alpine:3.15, the issue goes away.

I am not sure what the best course of action is here, as I have to assume rust:alpine will be bumped in coming days. Until then, the wash alpine container is broken.

To Reproduce Steps to reproduce the behavior:

1. docker run -it --rm wasmcloud/wash:alpine wash

Expected behavior See help menu