fix(docs): supply chain example container image exact versions #751

Remove the specific versions from the Dockerfile so that instead what
gets installed is "whatever's latest that day". This is not preferred, but
since Alpine Package Manager disappears versions of packages after
the fact, we do not have a choice but to abandon our quest for
reproducible builds in this particular instance.

Fixes #751

Signed-off-by: Peter Somogyvari <peter.somogyvari@accenture.com>

examples/supply-chain-app/Dockerfile

@@ -3,7 +3,7 @@ FROM node:12.20.1-alpine3.12 as builder
 RUN apk update
 
 # Need JDK for the openapi-generator that is part of the build process
-RUN apk add --no-cache openjdk8=8.275.01-r0
+RUN apk add --no-cache openjdk8
 
 # Need git because some of our npm depedencies might be coming
 # straight from github instead of being an npm package on npmjs.com.
@@ -56,23 +56,23 @@ USER root
 RUN apk update
 
 # Add bash for convenience, sh has less features
-RUN apk add --no-cache bash=5.0.17-r0
+RUN apk add --no-cache bash
 
 # Need curl for healthchecks
-RUN apk add --no-cache curl=7.69.1-r3
+RUN apk add --no-cache curl
 
 # The file binary is used to inspect exectubles when debugging container image issues
-RUN apk add --no-cache file=5.38-r0
+RUN apk add --no-cache file
 
-RUN apk add --no-cache nodejs=12.20.1-r0
-RUN apk add --no-cache npm=12.20.1-r0
+RUN apk add --no-cache nodejs
+RUN apk add --no-cache npm
 
-RUN apk add --no-cache ca-certificates=20191127-r4
+RUN apk add --no-cache ca-certificates
 RUN apk add --no-cache tzdata
 
 # Install supervisord because we need to run the docker daemon and also the fabric network
 # meaning that we have multiple processes to run.
-RUN apk add --no-cache supervisor=4.2.0-r0
+RUN apk add --no-cache supervisor
 
 ARG APP=/usr/src/app/