[WIP] Initial pass at Dockerfile for metaschema-framework#22

Dockerfile

@@ -0,0 +1,23 @@
+ARG BUILDER_IMAGE=maven:3.9.9-eclipse-temurin-17-alpine
+ARG RUNNER_IMAGE=eclipse-temurin:17-alpine
+ARG CONTAINER_BUILD=yes
+
+FROM ${BUILDER_IMAGE} as builder
+ARG CONTAINER_BUILD
+COPY . /usr/local/src
+RUN if [ -n "$CONTAINER_BUILD" ]; \
+    then apk add --no-cache git unzip && \
+    cd /usr/local/src && \
+    mvn -B -e -Prelease package; \
+    else echo Building on host outside container to copy later; \
+    fi && \
+    cp target/*.zip /tmp
+COPY ./target/oscal-cli-enhanced-2.1.0-SNAPSHOT-oscal-cli.zip /tmp
+WORKDIR /tmp
+RUN unzip *.zip -d /opt/oscal-cli-extended
+
+
+FROM ${RUNNER_IMAGE} as runner
+COPY --from=builder /opt/oscal-cli-extended /opt/oscal-cli-extended
+WORKDIR /opt/oscal-cli-extended
+ENTRYPOINT [ "/opt/oscal-cli-extended/bin/oscal-cli" ]