Spring Boot 3 Native Image sample from Docker scratch
- Only Linux amd64 is supported at the moment!
Build and run
# Build the native image from scratch
docker build -t native-sample .
# Let's look at the layers
dive native-sample
# ┃ ● Layers ┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ │ Current Layer Contents ├───────────────────────────────────────────
# Cmp Size Command Permission UID:GID Size Filetree
# 0 B FROM a9b99f883087b4c -rwxr-xr-x 0:0 17 MB ├── native-sample
# 17 MB COPY /app/build/native/nativeCompile/native-sample . # bu drwxr-xr-x 0:0 0 B └── tmp
#
# │ Layer Details ├────────────────────────────────────────────────────
# Or only inspect size of the image
docker inspect -f "{{ .Size }}" native-sample | numfmt --to=si
# 17M
# Run the image
docker run -it --rm -p 8080:8080 native-sample
# . ____ _ __ _ _
# /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
# ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
# \\/ ___)| |_)| | | | | || (_| | ) ) ) )
# ' |____| .__|_| |_|_| |_\__, | / / / /
# =========|_|==============|___/=/_/_/_/
# :: Spring Boot :: (v3.0.3)
#
# 2023-02-28T21:10:09.282Z INFO 1 --- [ main] l.s.n.NativeSampleApplication : Starting AOT-processed NativeSampleApplication using Java 17.0.6 with PID 1 (/native-sample started by ? in /)
# 2023-02-28T21:10:09.282Z INFO 1 --- [ main] l.s.n.NativeSampleApplication : No active profile set, falling back to 1 default profile: "default"
# 2023-02-28T21:10:09.293Z INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
# 2023-02-28T21:10:09.293Z INFO 1 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
# 2023-02-28T21:10:09.293Z INFO 1 --- [ main] o.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/10.1.5]
# 2023-02-28T21:10:09.298Z INFO 1 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
# 2023-02-28T21:10:09.298Z INFO 1 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 16 ms
# 2023-02-28T21:10:09.327Z WARN 1 --- [ main] i.m.c.i.binder.jvm.JvmGcMetrics : GC notifications will not be available because MemoryPoolMXBeans are not provided by the JVM
# 2023-02-28T21:10:09.329Z INFO 1 --- [ main] o.s.b.a.e.web.EndpointLinksResolver : Exposing 1 endpoint(s) beneath base path '/actuator'
# 2023-02-28T21:10:09.332Z INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
# 2023-02-28T21:10:09.332Z INFO 1 --- [ main] l.s.n.NativeSampleApplication : Started NativeSampleApplication in 0.056 seconds (process running for 0.057)
# Navigate to http://localhost:8080/actuator/healthResults
- Build time: 202 s (3.3 min)
- Image size: 17 MB
- Startup time: 56 ms
- Memory consumption at the beginning: 124MB
Computer specs:
- CPU: Intel i5-6600K
- Memory: 48 GB, DDR4
- OS: Linux 5.10
- Docker: 23.0.1
Spring recommended way
# Use Cloud Native Buildpacks
./gradlew bootBuildImage
# Size 98M
# Run the image
docker run -it --rm -p 8080:8080 native-sample