From 09651da81e8bf50eca49cfd9a5056e408d19edc5 Mon Sep 17 00:00:00 2001
From: lucaCambi77 <lucacambi77@gmail.com>
Date: Sat, 16 Jul 2022 17:37:07 +0200
Subject: [PATCH] [ BAEL-5503 ] - Difference Between links and depends_on in
 Docker-Compose (#12503)

* updates pom-xml and adds Dockerfile to build a web-app image

* add depends-on vs links yml examples
---
 docker-modules/docker-compose/Dockerfile      |  4 +++
 .../docker-compose-depends-on.yml             | 14 ++++++++
 .../docker-compose-links.yml                  | 14 ++++++++
 .../docker-compose-network.yml                | 36 +++++++++++++++++++
 docker-modules/docker-compose/pom.xml         | 10 ++++++
 5 files changed, 78 insertions(+)
 create mode 100644 docker-modules/docker-compose/Dockerfile
 create mode 100644 docker-modules/docker-compose/depends-on_vs_links/docker-compose-depends-on.yml
 create mode 100644 docker-modules/docker-compose/depends-on_vs_links/docker-compose-links.yml
 create mode 100644 docker-modules/docker-compose/depends-on_vs_links/docker-compose-network.yml

diff --git a/docker-modules/docker-compose/Dockerfile b/docker-modules/docker-compose/Dockerfile
new file mode 100644
index 0000000000..8d1bded77e
--- /dev/null
+++ b/docker-modules/docker-compose/Dockerfile
@@ -0,0 +1,4 @@
+FROM openjdk:11
+MAINTAINER baeldung.com
+COPY target/docker-compose-0.0.1-SNAPSHOT.jar app.jar
+ENTRYPOINT ["java","-jar","/app.jar"]
diff --git a/docker-modules/docker-compose/depends-on_vs_links/docker-compose-depends-on.yml b/docker-modules/docker-compose/depends-on_vs_links/docker-compose-depends-on.yml
new file mode 100644
index 0000000000..1f9b42384e
--- /dev/null
+++ b/docker-modules/docker-compose/depends-on_vs_links/docker-compose-depends-on.yml
@@ -0,0 +1,14 @@
+services:
+  db:
+    image: postgres:latest
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+    ports:
+      - 5432:5432
+  web-app:
+    image: web-app:latest
+    ports:
+      - 8080:8080
+    depends_on:
+      - db
\ No newline at end of file
diff --git a/docker-modules/docker-compose/depends-on_vs_links/docker-compose-links.yml b/docker-modules/docker-compose/depends-on_vs_links/docker-compose-links.yml
new file mode 100644
index 0000000000..cf84970b3c
--- /dev/null
+++ b/docker-modules/docker-compose/depends-on_vs_links/docker-compose-links.yml
@@ -0,0 +1,14 @@
+services:
+  db:
+    image: postgres:latest
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+    ports:
+      - 5432:5432
+  web-app:
+    image: web-app:latest
+    ports:
+      - 8080:8080
+    links:
+      - db
\ No newline at end of file
diff --git a/docker-modules/docker-compose/depends-on_vs_links/docker-compose-network.yml b/docker-modules/docker-compose/depends-on_vs_links/docker-compose-network.yml
new file mode 100644
index 0000000000..6b6796b43d
--- /dev/null
+++ b/docker-modules/docker-compose/depends-on_vs_links/docker-compose-network.yml
@@ -0,0 +1,36 @@
+services:
+  db:
+    image: postgres:latest
+    restart: always
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=postgres
+    ports:
+      - 5432:5432
+    volumes:
+      - db:/var/lib/postgresql/data
+    networks:
+      - mynet
+
+  web-app:
+    image: web-app:latest
+    depends_on:
+      - db
+    networks:
+      - mynet
+    ports:
+      - 8080:8080
+    environment:
+      DB_HOST: db
+      DB_PORT: 5432
+      DB_USER: postgres
+      DB_PASSWORD: postgres
+      DB_NAME: postgres
+
+networks:
+  mynet:
+    driver: bridge
+
+volumes:
+  db:
+    driver: local
diff --git a/docker-modules/docker-compose/pom.xml b/docker-modules/docker-compose/pom.xml
index 7215d6e159..39bad18d02 100644
--- a/docker-modules/docker-compose/pom.xml
+++ b/docker-modules/docker-compose/pom.xml
@@ -34,6 +34,16 @@
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <mainClass>com.baeldung.docker.app.DockAppApplication</mainClass>
+                </configuration>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>repackage</goal>
+                        </goals>
+                    </execution>
+                </executions>
             </plugin>
         </plugins>
     </build>