chore(jsp): wip docs and updated dockerfile (#531)

- some docs on the new GCP run environment
- update the Dockerfile to be less vulnerable
- also ignore 'cldr' which is a location used by the automated build

For #523

.gitignore

@@ -85,3 +85,4 @@ rules.mk
 
 .DS_Store
 /output
+/cldr

UnicodeJsps/Dockerfile

@@ -11,7 +11,7 @@ RUN ls -lh /build/source/bidiref1 && (/build/source/bidiref1 || true)
 ADD ./target/cldr-unicodetools.tgz /build/data/
 # move this into place (including unicodetools/unicodetools)
 RUN rm -rf /build/data/cldr/.git  # unneeded
-FROM jetty:9-jre11-slim AS run
+FROM jetty:9-jre11-alpine-eclipse-temurin AS run
 ADD port-entrypoint.sh /port-entrypoint.sh
 ADD ./jetty.d/ROOT /var/lib/jetty/webapps/ROOT/
 ENTRYPOINT [ "/port-entrypoint.sh" ]

docs/unicodejsps/gcp-run.md

@@ -0,0 +1,64 @@
+# Manually Building and Pushing UnicodeJSPs to Docker / GCP Run
+
+- This page is Under Construction by Steven `@srl295`
+
+- see [index.md](./index.md) for the prior documentation
+
+## maven stuff
+
+- local build
+
+```
+mvn -B package -am -pl UnicodeJsps -DskipTests=true
+```
+
+- make a copy of CLDR - lots of ways to do this
+
+```
+git clone --reference-if-able ~/src/cldr https://github.com/unicode-org/cldr.git
+mkdir -p UnicodeJsps/target && tar -cpz --exclude=.git -f UnicodeJsps/target/cldr-unicodetools.tgz ./cldr/ ./unicodetools/
+```
+
+## docker stuff
+
+- build it
+
+```
+docker build -t unicode/unicode-jsps .
+```
+
+- try it
+
+```
+docker run --rm -p 8080:8080 unicode/unicode-jsps
+```
+
+=> <http://127.0.0.1:8080>
+
+
+## cloudy stuff
+
+- install gcloud sdk
+
+- `gcloud init`
+
+- login to docker
+
+```
+gcloud auth configure-docker \
+    us-central1-docker.pkg.dev
+```
+
+- build docker image
+
+```
+docker build -t us-central1-docker.pkg.dev/goog-unicode-dev/unicode-jsps/unicode-jsps:latest .
+```
+
+- push docker image
+
+_(takes a while - ~4G to push)_
+
+```
+docker push us-central1-docker.pkg.dev/goog-unicode-dev/unicode-jsps/unicode-jsps:latest
+```

docs/unicodejsps/index.md

@@ -1,5 +1,13 @@
 # Building UnicodeJsp
 
+- Note: you can run the latest UnicodeJsp locally with docker using:
+
+```
+docker run --rm -p 8080:8080 unicode/unicode-jsp
+```
+
+- Note 2: there are some notes on updated processes for using GCP at [gcp-run.md](./gcp-run.md) - at present, automated deployment is TODO.
+
 ## Compiling
 ### Prerequisites
 - Java