This Demo shows different ways of building software in Docker.
$ docker run -it -v $PWD:/home/gradle/src adoptopenjdk/openjdk11:alpine-slim /bin/sh
# cd /home/gradle/src/
/home/gradle/src # ls
Dockerfile build.gradle gradle gradlew gradlew.bat src gradlew gradlew.bat
/home/gradle/src # ./gradlew build --no-daemon
…
BUILD SUCCESSFUL in 25s
3 actionable tasks: 3 executed$ docker build -t a19/$USER/build-demo .
…
BUILD SUCCESSFUL in 22s
…
Successfully built 00de8f500328
Successfully tagged a19/user/build-demo:latestYou can now see the images:
$ docker images | grep $USER/build-demo
a19/user/build-demo latest 10292cd1035d 2 minutes ago 512MBStarting the freshly build container:
$ docker run a19/$USER/build-demo:latest
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.6.RELEASE)
…
2019-10-13 21:40:14.235 INFO 1 --- [ main] com.innoq.product.Application : Started Application in 3.489 seconds (JVM running for 4.263)$ docker build -f Dockerfile-multi -t a19/$USER/build-demo-multi .
…
BUILD SUCCESSFUL in 20s
…
Successfully built adad7203c481
Successfully tagged a19/root/build-demo-multi:latestCompare the size of both images:
$ docker images | grep $USER/build-demo
a19/user/build-demo-multi latest adad7203c481 57 seconds ago 158MB
a19/user/build-demo latest 10292cd1035d 11 minutes ago 512MBTest if the new Image does work:
$ docker run a19/$USER/build-demo-multi:latest
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.6.RELEASE)
2019-10-13 21:52:50.126 INFO 1 --- [ main] com.innoq.product.Application : Starting Application on 73468d32d42c with PID 1 (/app/spring-boot-application.jar started by root in /)
2019-10-13 21:52:50.132 INFO 1 --- [ main] com.innoq.product.Application : No active profile set, falling back to default profiles: default
2019-10-13 21:52:51.820 INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 9001 (http)
…
2019-10-13 21:52:52.810 INFO 1 --- [ main] com.innoq.product.Application : Started Application in 3.381 seconds (JVM running for 4.139)$ docker build -f Dockerfile-builder -t a19/build-demo/builder:latest .
…
Successfully built ad62d12483db
Successfully tagged a19/build-demo/builder:latestCheck if the images was build:
$ docker images | grep a19/build-demo/builder
a19/build-demo/builder latest e9460a98e29b 11 seconds ago 402MBBuilding the Application with the newly created Build-Image:
$ docker build -f Dockerfile-with-builder -t a19/$USER/build-demo-with-builder .
…
BUILD SUCCESSFUL in 9s
…
Successfully built adad7203c481
Successfully tagged a19/user/build-demo-with-builder:latestCompare the image sizes:
$ docker images | grep a19/$USER/build-demo-
a19/root/build-demo-with-builder latest adad7203c481 18 minutes ago 158MB
a19/root/build-demo-multi latest adad7203c481 18 minutes ago 158MB
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