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@@ -3,6 +3,9 @@
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# (errors common in arm/v7 32bit) https://github.com/dotnet/dotnet-docker/issues/1537
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# https://hub.docker.com/_/microsoft-dotnet
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# hadolint ignore=DL3029
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+# to build for a different platform than your host, use --platform=<platform>
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+# for example, if you were on Intel (amd64) and wanted to build for ARM, you would use:
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+# docker buildx build --platform "linux/arm64/v8" .
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FROM --platform=${BUILDPLATFORM} mcr.microsoft.com/dotnet/sdk:7.0 as build
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ARG TARGETPLATFORM
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ARG BUILDPLATFORM
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@@ -13,6 +16,7 @@ COPY *.csproj .
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RUN case ${TARGETPLATFORM} in \
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"linux/amd64") ARCH=x64 ;; \
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"linux/arm64") ARCH=arm64 ;; \
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+ "linux/arm64/v8") ARCH=arm64 ;; \
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"linux/arm/v7") ARCH=arm ;; \
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esac \
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&& dotnet restore -r linux-${ARCH}
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@@ -21,6 +25,7 @@ COPY . .
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RUN case ${TARGETPLATFORM} in \
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"linux/amd64") ARCH=x64 ;; \
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"linux/arm64") ARCH=arm64 ;; \
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+ "linux/arm64/v8") ARCH=arm64 ;; \
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"linux/arm/v7") ARCH=arm ;; \
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esac \
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&& dotnet publish -c release -o /app -r linux-${ARCH} --self-contained false --no-restore
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Bret Fisher