UBI Minimial with Kotlin Native

Dockerfile

FROM registry.access.redhat.com/ubi7/ubi:latest AS build

RUN yum -y install --disableplugin=subscription-manager \ 
        java-11-openjdk

ARG kotlin_version=1.3.72
RUN curl -LO https://github.com/JetBrains/kotlin/releases/download/v${kotlin_version}/kotlin-native-linux-${kotlin_version}.tar.gz \
 && tar -xzf kotlin-native-linux-${kotlin_version}.tar.gz \
 && rm kotlin-native-linux-${kotlin_version}.tar.gz

# Run compiler once so it downloads native dependencies into a separate layer
RUN export PATH=kotlin-native-linux-${kotlin_version}/bin:$PATH \
 && echo "fun main() { println(\"Foo!\") }" > foo.kt \
 && kotlinc-native foo.kt -o foo \
 && rm foo*

COPY hello-world.kt ./
RUN export PATH=kotlin-native-linux-${kotlin_version}/bin:$PATH \
 && kotlinc-native hello-world.kt -o hello-world

# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # 

FROM registry.access.redhat.com/ubi7/ubi-minimal:latest AS run

COPY --from=build hello-world.kexe ./hello-world

CMD ./hello-world

hello-world.kt

fun main() {
    println("Hello World, I'm Kotlin Native!")
}

For UBI 8:

FROM registry.access.redhat.com/ubi8/ubi:latest AS build

RUN yum -y install --disableplugin=subscription-manager \ 
        ncurses-compat-libs \
        java-11-openjdk

# snip

FROM registry.access.redhat.com/ubi8/ubi-minimal:latest AS run

Blog post: https://reitzig.github.io/today-i-learned/posts/2020-05-20-kotlin-native-in-ubi/