Merge pull request #23 from vpa1977/petclinic-demo

Add spring petclinic demo

demos/petclinic/Dockerfile

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+ARG PETCLINIC_REPO
+ARG PETCLINIC_TAG
+
+ARG BASE_IMAGE=ubuntu/chiselled-jre:8_edge
+ARG USER=app
+ARG UID=101
+ARG GROUP=app
+ARG GID=101
+
+FROM eclipse-temurin:8u362-b09-jdk-jammy as builder
+
+ENV PETCLINIC_TAG=${PETCLINIC_TAG:-spring-boot-2.7.3}
+ENV PETCLINIC_REPO=${PETCLINIC_REPO:-https://github.com/vpa1977/spring-petclinic}
+
+RUN apt-get update \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y git
+
+RUN git clone --branch $PETCLINIC_TAG $PETCLINIC_REPO
+
+RUN cd spring-petclinic && ./mvnw package
+
+FROM $BASE_IMAGE
+
+ARG USER
+ARG UID
+ARG GID
+USER $UID:$GID
+
+# copy petclinic sample
+COPY --chown=$UID:$GID --from=builder \
+    /spring-petclinic/target/spring-petclinic-2.7.3.jar /
+
+WORKDIR /
+
+ENTRYPOINT ["/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java", \
+    "-jar", \
+    "spring-petclinic-2.7.3.jar" ]

demos/petclinic/README.md

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+# Spring PetClinic
+
+This Dockerfile runs the [Spring PetClinic](https://github.com/spring-projects/spring-petclinic) sample on the `ubuntu/chiselled-jre` container image.
+
+# Running the sample
+
+Execute:
+
+`` docker build -t petclinic . && docker run -p 8080:8080 --tmpfs /tmp:exec petclinic ``
+
+Give it a few minutes to build the sample application and then navigate to http://localhost:8080 to explore the demo.