Add dockerfiles, add compose, add build.gradle, modify postgres.properties, add .env

.env

@@ -0,0 +1,6 @@
+DB_USER=customUser
+DB_PASSWORD=customPassword
+DB_DATABASE=customDb
+DB_CONTAINER_NAME=database
+DB_URL=jdbc:postgresql://${DB_CONTAINER_NAME}/${DB_DATABASE}
+

Dockerfile

@@ -0,0 +1,46 @@
+
+FROM eclipse-temurin:17-jdk-jammy as deps
+WORKDIR /build
+COPY --chmod=0755 mvnw mvnw
+COPY .mvn/ .mvn/
+RUN --mount=type=bind,source=pom.xml,target=pom.xml \
+    --mount=type=cache,target=/root/.m2 ./mvnw dependency:go-offline -DskipTests
+
+FROM deps as package
+WORKDIR /build
+COPY ./src src/
+RUN --mount=type=bind,source=pom.xml,target=pom.xml \
+    --mount=type=cache,target=/root/.m2 \
+    ./mvnw package -DskipTests && \
+    mv target/$(./mvnw help:evaluate -Dexpression=project.artifactId -q -DforceStdout)-$(./mvnw help:evaluate -Dexpression=project.version -q -DforceStdout).jar target/app.jar
+
+FROM package as extract
+WORKDIR /build
+RUN java -Djarmode=layertools -jar target/app.jar extract --destination target/extracted
+
+FROM extract as development
+WORKDIR /build
+RUN cp -r /build/target/extracted/dependencies/. ./
+RUN cp -r /build/target/extracted/spring-boot-loader/. ./
+RUN cp -r /build/target/extracted/snapshot-dependencies/. ./
+RUN cp -r /build/target/extracted/application/. ./
+ENV JAVA_TOOL_OPTIONS -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:8000
+CMD [ "java", "-Dspring.profiles.active=postgres", "org.springframework.boot.loader.launch.JarLauncher" ]
+
+FROM eclipse-temurin:17-jre-jammy AS final
+ARG UID=10001
+RUN adduser \
+    --disabled-password \
+    --gecos "" \
+    --home "/nonexistent" \
+    --shell "/sbin/nologin" \
+    --no-create-home \
+    --uid "${UID}" \
+    appuser
+USER appuser
+COPY --from=extract build/target/extracted/dependencies/ ./
+COPY --from=extract build/target/extracted/spring-boot-loader/ ./
+COPY --from=extract build/target/extracted/snapshot-dependencies/ ./
+COPY --from=extract build/target/extracted/application/ ./
+EXPOSE 8080
+ENTRYPOINT [ "java", "-Dspring.profiles.active=postgres", "org.springframework.boot.loader.launch.JarLauncher" ]

Dockerfile-multi_stage

@@ -0,0 +1,28 @@
+FROM eclipse-temurin:17-jdk-jammy as build
+WORKDIR /build
+COPY --chmod=0755 mvnw mvnw
+COPY .mvn/ .mvn/
+COPY pom.xml .
+RUN --mount=type=cache,target=/root/.m2 ./mvnw dependency:go-offline -DskipTests
+
+COPY ./src src/
+RUN --mount=type=cache,target=/root/.m2 \
+    ./mvnw package -DskipTests && \
+    mv target/$(./mvnw help:evaluate -Dexpression=project.artifactId -q -DforceStdout)-$(./mvnw help:evaluate -Dexpression=project.version -q -DforceStdout).jar target/app.jar
+
+
+FROM eclipse-temurin:17-jre-jammy AS final
+
+WORKDIR /src
+
+COPY --from=build /build/target/app.jar .
+
+RUN groupadd -r -g 2001 groupuser && useradd -r -m -d /home/myuser -u 2001 -g 2001 -s /sbin/nologin myuser
+
+RUN chown myuser:groupuser .
+
+USER myuser
+
+EXPOSE 8080
+
+ENTRYPOINT [ "java", "-jar",  "/src/app.jar" ]

Dockerfile-single_stage

@@ -0,0 +1,13 @@
+FROM maven:3.9-eclipse-temurin-17
+
+WORKDIR  /src
+
+COPY ./target/spring-petclinic-4.2.jar /src/app.jar
+
+RUN groupadd -r -g 2001 groupuser && useradd -r -m -d /home/myuser -g 2001 myuser
+
+RUN chown myuser:groupuser .
+
+USER myuser
+
+ENTRYPOINT [ "java", "-jar",  "/src/app.jar" ]

build.gradle

@@ -7,12 +7,15 @@ plugins {
   id 'io.spring.javaformat' version '0.0.41'
   id "io.spring.nohttp" version "0.0.11"
   id 'pl.allegro.tech.build.axion-release' version '1.18.0'
+  id 'maven-publish'
+  id 'java-library'
 }
 
 apply plugin: 'java'
 apply plugin: 'checkstyle'
 apply plugin: 'io.spring.javaformat'
 
+
 gradle.startParameter.excludedTaskNames += [ "checkFormatAot", "checkFormatAotTest" ]
 
 group = 'org.springframework.samples'
@@ -27,6 +30,34 @@ repositories {
   mavenLocal()
 }
 
+publishing {
+  publications {
+      mavenJava(MavenPublication) {
+        from components.java
+        groupId = 'com.example'
+        artifactId = 'myCustomLib'
+        version = '1.0.0'
+    }   
+  }
+
+  repositories {
+    maven {
+      name = 'nexus'
+      url = uri('http://localhost:8081/repository/maven-local/')
+allowInsecureProtocol = true
+      credentials {
+        username = 'admin'
+        password = 'admin'
+      }
+    }
+  }
+}
+
+task localpublish {
+  dependsOn publish
+  description "publish to a local nexus repository instance"
+}
+
 ext.webjarsFontawesomeVersion = "4.7.0"
 ext.webjarsBootstrapVersion = "5.3.3"
 

compose.yaml

@@ -0,0 +1,34 @@
+services:
+  database:
+    image: postgres
+    environment:
+      - POSTGRES_USER=${DB_USER:-petclinic}
+      - POSTGRES_DB=${DB_DATABASE:-petclinic}
+      - POSTGRES_PASSWORD=${DB_PASSWORD:-petclinic}
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready", "-d", "${DB_DATABASE:-petclinic}"]
+      interval: 10s
+      retries: 5
+    volumes:
+      - postgres_data:/var/lib/postgresql
+
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile-multi_stage
+    environment:
+      - POSTGRES_URL=${DB_URL:-petclinic}
+      - POSTGRES_USER=${DB_USER:-petclinic}
+      - POSTGRES_PASS=${DB_PASSWORD:-petclinic}
+      - DATABASE=postgres
+      - SPRING_PROFILES_ACTIVE=postgres
+    depends_on:
+      database:
+        condition: service_healthy
+    volumes:
+      - deps:/home/myuser/.m2
+    ports:
+      - "8080:8080"
+volumes:
+  postgres_data:
+  deps:

docker-compose.yml

@@ -1,25 +0,0 @@
-services:
-  mysql:
-    image: mysql:8.4
-    ports:
-      - "3306:3306"
-    environment:
-      - MYSQL_ROOT_PASSWORD=
-      - MYSQL_ALLOW_EMPTY_PASSWORD=true
-      - MYSQL_USER=petclinic
-      - MYSQL_PASSWORD=petclinic
-      - MYSQL_DATABASE=petclinic
-    volumes:
-      - "./conf.d:/etc/mysql/conf.d:ro"
-    profiles:
-      - mysql
-  postgres:
-    image: postgres:16.3
-    ports:
-      - "5432:5432"
-    environment:
-      - POSTGRES_PASSWORD=petclinic
-      - POSTGRES_USER=petclinic
-      - POSTGRES_DB=petclinic
-    profiles:
-      - postgres

src/main/resources/application-postgres.properties

@@ -4,3 +4,5 @@ spring.datasource.username=${POSTGRES_USER:petclinic}
 spring.datasource.password=${POSTGRES_PASS:petclinic}
 # SQL is written to be idempotent so this is safe
 spring.sql.init.mode=always
+logging.level=DEBUG
+logging.level.org.springframework.web=DEBUG