Forklift buildx provider

examples/java/app/Dockerfile

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+FROM alpine
+RUN echo 👍

examples/java/app/Dockerfile.buildArgs

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+FROM alpine
+
+ARG SET_ME_TO_TRUE
+RUN [ "$SET_ME_TO_TRUE" = "true" ]
+RUN echo "That's the correct build arg, thanks! 👍"

examples/java/app/Dockerfile.emptyContext

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+FROM alpine
+RUN echo "This image doesn't use any local files, so it doesn't need a context parameter 👍"

examples/java/app/Dockerfile.extraHosts

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+FROM bash AS base
+
+RUN getent hosts metadata.google.internal

examples/java/app/Dockerfile.multiPlatform

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+FROM --platform=$BUILDPLATFORM alpine as build
+RUN echo ${BUILDPLATFORM} > buildplatform
+RUN echo ${TARGETPLATFORM} > targetplatform
+
+FROM build
+RUN cat buildplatform
+RUN cat targetplatform

examples/java/app/Dockerfile.namedContexts

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+# syntax=docker/dockerfile:1.4
+FROM golang:latest
+
+RUN version="$(go version)" && echo $version && [ "$version" = "go version go1.21.7 linux/amd64" ]
+RUN echo "This image uses named contexts to pin golang:latest to a specific SHA 👍"

examples/java/app/Dockerfile.secrets

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+FROM alpine
+
+RUN --mount=type=secret,id=password [ "$(cat /run/secrets/password)" = "hunter2" ]
+

examples/java/app/Dockerfile.sshMount

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+FROM alpine
+
+RUN apk add openssh-client
+
+RUN --mount=type=ssh ssh-add -l

examples/java/app/Dockerfile.target

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+FROM alpine as build-me
+RUN echo 👍
+
+FROM build-me as also-build-me
+RUN echo 🤙
+
+FROM build-me as dont-build-me
+RUN [ "true" = "false" ]