Build docker image for spring-boot
Hai semuanya, di materi kali ini kita akan membahas studi kasus menggunakan Java Framework yaitu spring-boot. Java spring-boot framework ini udah menjadi mature di beberapa corporate/startup di indonesia, jadi saya putuskan untuk membahas juga untuk dibuatkan containerization-nya. Berikut yang akan kita bahas yaitu
- Create project spring-boot
- Build docker image
- Development lifecycle and Containerization
- Cleanup
Ok langsung ja, kita bahas materi pertama
Create project spring-boot
Untuk membuat project spring-boot, kita bisa menggunakan start.spring.io seperti berikut:
Dengan setting properties:
- Project:
Maven Project - Spring Boot:
2.5.2, ini adalah spring-boot version yang digunakan. - Project Metadata:
- Group:
com.maryanto.dimas.udemy, untuk ini silahkan isi dengan alamat email kalian tetapi penulisannya di balik dan tanpa character khusus. - Artifact:
udemy-springboot-docker, untuk field ini di isi dengan nama aplikasi kalian - Name:
udemy-springboot-docker, untuk field ini di isi dengan nama aplikasi kalian sebagai description - Package name:
com.maryanto.dimas.udemy, untuk field ini di isi sama dengan group name - Packaging:
Jar, untuk field ini kita pilihjarsupaya bisa di jalankan secara standalone/service - Java:
11, untuk field ini temen-temen bebas versinya java. Untuk jaman sekarang2021kita pilih ja versi11
- Group:
- Dependencies:
Spring Boot DevToolsLombokSpring WebSpring Boot ActuatorThymeleaf
Setelah itu klick button GENERATE, maka kita akan di berikan compressed file .zip untuk template projectnya. Setelah itu kita buka menggunakan text editor seperti
- Visual Studio Code
- IntelliJ IDEA
- Netbeans
- Eclipse
Silahkan temen-temen pilih salah satu ja. Setelah itu buka projectnya dan untuk development environtment yang perlu kita install yaitu
Untuk menjalankan project development mode dengan perintah:
mvn clean spring-boot:runJika kita jalankan maka outputnya seperti berikut:
➜ udemy-springboot-docker git:(master) mvn clean spring-boot:run
[INFO] Scanning for projects...
[INFO]
[INFO] ----------< com.maryanto.dimas.udemy:udemy-springboot-docker >----------
[INFO] Building udemy-springboot-docker 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.5.2)
2021-06-29 06:25:41.548 INFO 6152 --- [ restartedMain] c.m.d.u.UdemySpringbootDockerApplication : Starting UdemySpringbootDockerApplication using Java 11.0.9 on MSI-z390-pro with PID 6152 (C:\Users\dimasm93\Workspaces\Example\udem
y-springboot-docker\target\classes started by dimasm93 in C:\Users\dimasm93\Workspaces\Example\udemy-springboot-docker)
2021-06-29 06:25:41.550 INFO 6152 --- [ restartedMain] c.m.d.u.UdemySpringbootDockerApplication : No active profile set, falling back to default profiles: default
2021-06-29 06:25:41.580 INFO 6152 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2021-06-29 06:25:41.581 INFO 6152 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2021-06-29 06:25:42.422 INFO 6152 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2021-06-29 06:25:42.429 INFO 6152 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-06-29 06:25:42.429 INFO 6152 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.48]
2021-06-29 06:25:42.473 INFO 6152 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2021-06-29 06:25:42.473 INFO 6152 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 892 ms
2021-06-29 06:25:42.690 WARN 6152 --- [ restartedMain] ion$DefaultTemplateResolverConfiguration : Cannot find template location: classpath:/templates/ (please add some templates or check your Thymeleaf configuration)
2021-06-29 06:25:42.748 INFO 6152 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729
2021-06-29 06:25:42.751 INFO 6152 --- [ restartedMain] o.s.b.a.e.web.EndpointLinksResolver : Exposing 1 endpoint(s) beneath base path '/actuator'
2021-06-29 06:25:42.777 INFO 6152 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2021-06-29 06:25:42.787 INFO 6152 --- [ restartedMain] c.m.d.u.UdemySpringbootDockerApplication : Started UdemySpringbootDockerApplication in 1.502 seconds (JVM running for 1.801)
Sekarang klo kita coba akses menggunakan browser localhost:8080/actuator seperti berikut:
Build docker image
Untuk membuat docker image menggunakan spring-boot framework yang kita butuhkan yaitu
Dockerfile.dockerignoredockerfile-mavenpluginsetting.xmlfor Authenticationjarfile hasil darimvn clean -DskipTests package
Berikut adalah setup Dockerfile untuk spring-boot framework yang di jalankan sebagai executeable:
Selanjutnya buat file dengan nama .dockerignore seperti berikut:
Tahap selanjutnya temen-temen boleh coba test dulu sebelum menggunakan plugin dengan mvn package command dan docker build command
Seperti berikut:
mvn clean -DskipTests package && \
docker build -t dimmaryanto93/spring-boot:0.0.1-snapshot && \
docker run --name springapp -p 8080:8080 -d dimmaryanto93/spring-boot:0.0.1-snapshotJika dijalankan hasilnya seperti berikut:
➜ udemy-springboot-docker git:(master) mvn clean -DskipTests package
[INFO]
[INFO] --- maven-jar-plugin:3.2.0:jar (default-jar) @ udemy-springboot-docker ---
[INFO] Building jar: C:\Users\dimasm93\Workspaces\Example\udemy-springboot-docker\target\udemy-springboot-docker-0.0.1-SNAPSHOT.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.734 s
[INFO] Finished at: 2021-06-29T07:57:06+07:00
[INFO] ------------------------------------------------------------------------
➜ udemy-springboot-docker git:(master) docker build -t dimmaryanto93/spring-boot:0.0.1-snapshot .
[+] Building 1.3s (10/10) FINISHED
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 32B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 35B 0.0s
=> [internal] load metadata for docker.io/library/openjdk:11-oraclelinux8 1.2s
=> [1/5] FROM docker.io/library/openjdk:11-oraclelinux8@sha256:11d0c95d44779dc85efd958fce96f86f7338508de347ea000 0.0s
=> [internal] load build context 0.0s
=> => transferring context: 99B 0.0s
=> CACHED [2/5] RUN groupadd www-data && adduser -r -g www-data www-data 0.0s
=> CACHED [3/5] WORKDIR /usr/local/share/apps 0.0s
=> CACHED [4/5] COPY --chown=www-data target/ . 0.0s
=> CACHED [5/5] RUN mv *.jar application.jar 0.0s
=> exporting to image 0.0s
=> => exporting layers 0.0s
=> => writing image sha256:604f0c0a765fb32101af6ad6ed99e5a24e94c91b834d3fbe35eed57911724794 0.0s
=> => naming to docker.io/dimmaryanto93/spring-boot:0.0.1-snapshot
➜ udemy-springboot-docker git:(master) docker run --name springapp -p 8080:8080 -d dimmaryanto93/spring-boot:0.0.1-snapshot
86fe9e12f66a51c8d7ef6f2cde90521f335e9f7cbf2ee645f30bd78bc54fc23b
➜ udemy-springboot-docker git:(master) docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
86fe9e12f66a dimmaryanto93/spring-boot:0.0.1-snapshot "java -jar -Djava.se…" 3 seconds ago Up 3 seconds (health: starting) 0.0.0.0:8080->8080/tcp, :::8080->8080/tcp springapp
➜ udemy-springboot-docker git:(master)✗ docker stats --no-stream springapp
CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS
86fe9e12f66a springapp 0.09% 227.9MiB / 3.842GiB 5.79% 906B / 0B 0B / 0B 33
➜ udemy-springboot-docker git:(master) docker top springapp
UID PID PPID C STIME TTY TIME CMD
999 10690 10669 8 00:59 ? 00:00:05 java -jar -Djava.security.egd=file:/dev/./urandom application.jar
Setelah semuanya aman, kita bisa tambahkan dockerfile-maven plugin dengan meng-edit file pom.xml seperti berikut:
Sekarang coba jalankan perintah buildnya, seperti berikut:
mvn clean -DskipTests package dockerfile:buildJika dijalankan maka outputnya seperti berikut:
➜ docker-springboot git:(master) mvn clean -DskipTests package dockerfile:build
[WARNING]
[WARNING] Some problems were encountered while building the effective settings
[WARNING] Unrecognised tag: 'releases' (position: START_TAG seen ...</url>\n <releases>... @9:20) @ C:\Users\dimasm93\.m2\settings.xml, line 9, column 20
[WARNING]
[INFO] Scanning for projects...
[INFO]
[INFO] ----------< com.maryanto.dimas.udemy:udemy-springboot-docker >----------
[INFO] Building udemy-springboot-docker 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] --- dockerfile-maven-plugin:1.4.13:build (default-cli) @ udemy-springboot-docker ---
[INFO] dockerfile: C:\Users\dimasm93\Workspaces\youtube\docker\08-studi-kasus\docker-springboot\Dockerfile
[INFO] contextDirectory: C:\Users\dimasm93\Workspaces\youtube\docker\08-studi-kasus\docker-springboot
[INFO] Building Docker context C:\Users\dimasm93\Workspaces\youtube\docker\08-studi-kasus\docker-springboot
[INFO] Path(dockerfile): C:\Users\dimasm93\Workspaces\youtube\docker\08-studi-kasus\docker-springboot\Dockerfile
[INFO] Path(contextDirectory): C:\Users\dimasm93\Workspaces\youtube\docker\08-studi-kasus\docker-springboot
[INFO]
[INFO] Image will be built as docker.io/dimmaryanto93/udemy-springboot-docker:0.0.1-SNAPSHOT
[INFO]
[INFO] Step 1/12 : ARG JDK_VERSION=11-oraclelinux8
[INFO]
[INFO] Step 2/12 : FROM openjdk:${JDK_VERSION}
[INFO]
[INFO] Pulling from library/openjdk
[INFO] Digest: sha256:11d0c95d44779dc85efd958fce96f86f7338508de347ea000e71576c3f4c7c68
[INFO] Status: Image is up to date for openjdk:11-oraclelinux8
[INFO] ---> 80cf0467be4a
[INFO] Step 3/12 : LABEL maintainer="Dimas Maryanto <software.dimas_m@icloud.com>"
[INFO]
[INFO] ---> Using cache
[INFO] ---> 8f1df0b9a7eb
[INFO] Step 4/12 : RUN groupadd www-data && adduser -r -g www-data www-data
[INFO]
[INFO] ---> Using cache
[INFO] ---> 343199548c78
[INFO] Step 5/12 : WORKDIR /usr/local/share/apps
[INFO]
[INFO] ---> Using cache
[INFO] ---> e7f5639afc7b
[INFO] Step 6/12 : USER www-data
[INFO]
[INFO] ---> Using cache
[INFO] ---> e06a53b40957
[INFO] Step 7/12 : ARG JAR_FILE="udemy-springboot-docker-0.0.1-SNAPSHOT.jar"
[INFO]
[INFO] ---> Using cache
[INFO] ---> e888ad93fe08
[INFO] Step 8/12 : ADD --chown=www-data:www-data target/$JAR_FILE application.jar
[INFO]
[INFO] ---> 30d03329e425
[INFO] Step 9/12 : ENTRYPOINT ["java"]
[INFO]
[INFO] ---> Running in 6a225ffacc3f
[INFO] Removing intermediate container 6a225ffacc3f
[INFO] ---> 5cdc3d362313
[INFO] Step 10/12 : CMD ["-jar", "-Djava.security.egd=file:/dev/./urandom", "application.jar"]
[INFO]
[INFO] ---> Running in d2b458ec83cd
[INFO] Removing intermediate container d2b458ec83cd
[INFO] ---> 8520ab8519bf
[INFO] Step 11/12 : EXPOSE 8080
[INFO]
[INFO] ---> Running in de769a8dfb24
[INFO] Removing intermediate container de769a8dfb24
[INFO] ---> 705117e860de
[INFO] Step 12/12 : HEALTHCHECK --interval=5m --timeout=3s CMD curl -f http://localhost:8080/actuator || exit 1
[INFO]
[INFO] ---> Running in 5d7e1c5c194c
[INFO] Removing intermediate container 5d7e1c5c194c
[INFO] ---> 95be4e9e2c39
[INFO] Successfully built 95be4e9e2c39
[INFO] Successfully tagged dimmaryanto93/udemy-springboot-docker:0.0.1-SNAPSHOT
[INFO]
[INFO] Detected build of image with id 95be4e9e2c39
[INFO] Building jar: C:\Users\dimasm93\Workspaces\youtube\docker\08-studi-kasus\docker-springboot\target\udemy-springboot-docker-0.0.1-SNAPSHOT-docker-info.jar
[INFO] Successfully built docker.io/dimmaryanto93/udemy-springboot-docker:0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 46.816 s
[INFO] Finished at: 2021-06-29T09:05:15+07:00
[INFO] ------------------------------------------------------------------------
➜ docker-springboot git:(master) docker scan --file .\Dockerfile dimmaryanto93/udemy-springboot-docker:0.0.1-SNAPSHOT
Testing dimmaryanto93/udemy-springboot-docker:0.0.1-SNAPSHOT...
Package manager: rpm
Target file: .\Dockerfile
Project name: docker-image|dimmaryanto93/udemy-springboot-docker
Docker image: dimmaryanto93/udemy-springboot-docker:0.0.1-SNAPSHOT
Platform: linux/amd64
Base image: openjdk:11-oraclelinux8
✓ Tested 112 dependencies for known vulnerabilities, no vulnerable paths found.
According to our scan, you are currently using the most secure version of the selected base image
➜ docker-springboot git:(master) docker run --name springweb -p 8080:8080 -d dimmaryanto93/udemy-springboot-docker:0.0.1-SNAPSHOT
626e8559d34fa5279b263c03ad0394d3e8aa94e84fc203032de9bfcdca727735
➜ docker-springboot git:(master) docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
626e8559d34f dimmaryanto93/udemy-springboot-docker:0.0.1-SNAPSHOT "java -jar -Djava.se…" 5 seconds ago Up 4 seconds (health: starting) 0.0.0.0:8080->8080/tcp, :::8080->8080/tcp springweb
➜ docker-springboot git:(master)✗ docker stats --no-stream springweb
CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS
626e8559d34f springweb 0.09% 236.7MiB / 3.842GiB 6.02% 906B / 0B 0B / 0B 33
➜ docker-springboot git:(master) docker top springweb
UID PID PPID C STIME TTY TIME CMD
999 1615 1595 11 02:06 ? 00:00:05 java -jar -Djava.security.egd=file:/dev/./urandom application.jar
Cleanup
Seperti biasa, setelah kita mencoba schenario tersebut kita bersih-bersih dulu ya. Berikut scriptnya:
For Bash script:
For Powershell script:
Yuk simak juga videonya,
Dan jika temen-temen belajar hal baru kali ini jangan lupa buat Like, Subcribe, dan Share ke temen kalian. Terimakasih!!!
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Referensi
https://docs.docker.com/