update build scripts

Signed-off-by: Peter Siegmund <developer@mars3142.org>

Dockerfile

@@ -1,35 +1,30 @@
-FROM maven:3-eclipse-temurin-21-jammy AS build
+# Stage that builds the application, a prerequisite for the running stage
+FROM eclipse-temurin:21-jdk-noble AS build
 
-# Install nodejs
+RUN apt-get update -qq
-RUN apt-get update
-RUN apt-get install -y ca-certificates curl gnupg
-RUN mkdir -p /etc/apt/keyrings
-RUN curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key | gpg --dearmor -o /etc/apt/keyrings/nodesource.gpg
-RUN echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_18.x nodistro main" | tee /etc/apt/sources.list.d/nodesource.list
-RUN apt-get update
-RUN apt-get install nodejs -y
 
 # Stop running as root at this point
-RUN useradd -m vaadin
+RUN useradd -m app
 WORKDIR /usr/src/app/
-RUN chown vaadin:vaadin /usr/src/app/
+RUN chown app:app /usr/src/app/
-USER vaadin
+USER app
-
-# Copy pom.xml and prefetch dependencies so a repeated build can continue from the next step with existing dependencies
-COPY --chown=vaadin pom.xml ./
 
 # Copy all needed project files to a folder
-COPY --chown=vaadin:vaadin src src
+COPY --chown=app ./.mvn/ .mvn
+COPY --chown=app ./mvnw ./pom.xml ./app.json ./
+COPY --chown=app ./src ./src
 
-# Build the production package, assuming that we validated the version before so no need for running tests again
+# Build the production package
-RUN mvn clean package -DskipTests -Pproduction --batch-mode
+RUN ./mvnw --batch-mode clean verify -DskipTests
 
 # Running stage: the part that is used for running the application
-FROM eclipse-temurin:21-jre-jammy
+FROM eclipse-temurin:21-jre-noble
-COPY --from=build /usr/src/app/target/*.jar /usr/app/website.jar
 
-RUN useradd -m vaadin
+RUN useradd -m app
-USER vaadin
+USER app
+
+COPY --chown=app --from=build /usr/src/app/target/*.jar /usr/app/website.jar
+
+HEALTHCHECK CMD curl --fail http://localhost:5000/actuator/health/liveness || exit 1
 
-EXPOSE 8080
 CMD ["java", "-jar", "/usr/app/website.jar"]

app.json

@@ -0,0 +1,14 @@
+{
+  "healthchecks": {
+    "web": [
+      {
+        "type":        "readiness",
+        "name":        "web check",
+        "description": "Checking if the app responds to the /actuator/health/readiness endpoint",
+        "path":        "/actuator/health/readiness",
+        "port": 5000,
+        "attempts": 3
+      }
+    ]
+  }
+}