use alpine for dockerfile base images (#758)

## Description

Uses alpine in the base docker images, to gain access
to a shell within corso containers.

## Type of change

- [x] 🌻 Feature

## Issue(s)

* #573 

## Test Plan

- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

build/Dockerfile

@@ -3,8 +3,7 @@
 # This dockerfile is configured to be run by the /corso/build/build-container.sh
 # script.  Using docker to build this file directly will fail.
 
-FROM gcr.io/distroless/base-debian10
-# FROM gcr.io/distroless/base:debug
+FROM alpine:3.16
 
 WORKDIR /
 

docker/Dockerfile

@@ -20,7 +20,7 @@ ARG TARGETARCH
 RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -o /corso .
 
 ## Deploy
-FROM gcr.io/distroless/base-debian10
+FROM alpine:3.16
 
 COPY --from=build /corso /