deps: quarkus graalvmce build base (#23)

* deps: quarkus graalvmce build base

* Chop down build

* Comments and layout

* Simplify Dockerfile, use .dockerignore, comments

backend-java/.dockerignore

@@ -1 +1,8 @@
 target/**
+.dockerignore
+.gitignore
+Dockerfile
+mvnw.cmd
+*.yml
+*.yaml
+*.md

backend-java/Dockerfile

@@ -1,23 +1,21 @@
-FROM quay.io/quarkus/ubi-quarkus-native-image:22.3.0-java17 AS build
-COPY --chown=quarkus:quarkus mvnw /code/mvnw
-COPY --chown=quarkus:quarkus .mvn /code/.mvn
-COPY --chown=quarkus:quarkus pom.xml /code/
-USER quarkus
-WORKDIR /code
-RUN chmod +x mvnw
-RUN ./mvnw -B org.apache.maven.plugins:maven-dependency-plugin:3.1.2:go-offline
-COPY src /code/src
+# Quarkus Images
+# https://github.com/quarkusio/quarkus-images
+
+# "Provides the native-image executable. Used by the Maven and Gradle plugin from Quarkus to build linux64 executables"
+FROM quay.io/quarkus/ubi-quarkus-graalvmce-builder-image:22.3.3-java17 AS build
+
+# Image defaults to /project; copy controlled by .dockerignore
+COPY --chown=quarkus:quarkus . ./
 RUN ./mvnw package -Pnative -DskipTests
-HEALTHCHECK --interval=300s --timeout=30s CMD ./mvnw --version  || exit 1
-###
+
+# "A base image to run Quarkus native application using UBI Micro"
 FROM quay.io/quarkus/quarkus-micro-image:2.0
-WORKDIR /work/
-RUN chown 1001 /work \
-    && chmod "g+rwX" /work \
-    && chown 1001:root /work
-COPY --chown=1001:root --from=build /code/target/*-runner /work/application
 
+# Port and health check
 EXPOSE 3000
-USER 1001
 HEALTHCHECK --interval=300s --timeout=3s CMD curl -f http://localhost:3000/ || exit 1
-CMD ["./application", "-Dquarkus.http.host=0.0.0.0"]
+
+# Startup
+COPY --chown=1001:root --from=build /project/target/*-runner /app
+USER 1001
+CMD ["/app", "-Dquarkus.http.host=0.0.0.0"]