Docker and Spring boot seed project

##Assumptions:

1. You have basic knowledge of spring profiling.
2. Docker is installed on your system.
3. for Amazon's ECS:
   1. aws cli is installed on your system
   2. You have amazon secret key and access key with you, if generate your credentials.
   3. you have ECR access for your user.

To pull this docker image use

docker pull javatechy/dockboot

Dockerizing your spring boot application

• To Dockerize a spring boot application create a folder docker inside src/main/
• Copy Dockerfile and wrapper.sh from src/main/docker of this project into your project's src/main/docker
• Add this repository path in your pom properties(in your project or in your pom/ if your are using parent pom add it there).

If you are using Amazon ECR add your registry like this:

	<docker.registry>XXXXXXXX.dkr.ecr.ap-south-1.amazonaws.com</docker.registry>

If you want to push the image in your public docker hub account add your username like this

	<docker.registry>javatechy</docker.registry>

• Add this plugin in plugins section of your pom.xml

  <plugin>
   			<groupId>io.fabric8</groupId>
   			<artifactId>docker-maven-plugin</artifactId>
   			<configuration>
   				<verbose>true</verbose>
   				<registry>${docker.registry}</registry>
   				<dockerFileDir>src/main/docker</dockerFileDir>
   				<images>
   					<image>
   						<name>${docker.registry}/dockboot:${project.version}</name>
   						<build>
   							<dockerFileDir>${project.basedir}/src/main/docker</dockerFileDir>
   							<tags>
   								<tag>${project.version}</tag>
   								<tag>latest</tag>
   							</tags>

   							<assembly>
   								<inline>
   									<dependencySets>
   										<dependencySet>
   											<includes>
   												<include>${project.groupId}:${project.artifactId}</include>
   											</includes>
   											<outputFileNameMapping>app.jar</outputFileNameMapping>
   										</dependencySet>
   									</dependencySets>
   								</inline>
   							</assembly>
   						</build>
   					</image>
   				</images>
   			</configuration>
   			<executions>
   				<execution>
   					<id>build-docker-image</id>
   					<phase>package</phase>
   					<goals>
   						<goal>build</goal>
   					</goals>
   				</execution>
   				<execution>
   					<id>push-docker-image</id>
   					<phase>deploy</phase>
   					<goals>
   						<goal>push</goal>
   					</goals>
   				</execution>
   			</executions>
   		</plugin>

Note: replace dockboot in above code inside images->image->name with your application name.

Build your docker image:

Run this command and your will find your docker image in docker images

mvn clean install

to Skip docker build

mvn clean install -Ddocker.skip

Push An Image to ECR:

• Configure your aws cli using this command aws configure and add your credentials and region.
• get Login credentials from ECS by using this

aws ecr get-login --no-include-email --region ap-south-1

• If your project's repository is not created yet execute this command aws ecr create-repository --repository-name PROJECT_NAME

• Copy the above command output and run it.

• check your image after mvn clean install using docker images

• To Push an image ,Go inside your project directory. (If using mutlimodule project go inside your working project directory or sub project) and execute this command

mvn docker:push

Run this image:

Assuming your logs directory /var/log/casa and your spring boot active profile is DEV provided by ENV_NAME

docker run -it -v /var/log/casa:/var/log/casa -p 9000:8000 -e ENV_NAME=dev javatechy/dockboot:1.0

Run in detached Mode

docker run -it -v /var/log/casa:/var/log/casa -p 9000:8000 -d -e ENV_NAME=dev javatechy/dockboot:1.0