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fix cross-compiled docker images

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binaries for linux/amd64 were build for each target platform. apparently the
--platform in the first-stage overrides the $TARGET* variables of the build.
docker behaviour always manages to surprise me...
This commit is contained in:
Mechiel Lukkien
2023-02-27 13:46:29 +01:00
parent 92e018e463
commit f3f2c6f8ea
2 changed files with 18 additions and 9 deletions
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8
Dockerfile.release
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@ -1,8 +1,12 @@
FROM --platform=linux/amd64 docker.io/golang:1-alpine AS build
# note: cannot use $TARGETOS or $TARGETARCH because apparently the --platform in
# the FROM above overrides the actual target os/arch from the command-line.
ARG goos
ARG goarch
WORKDIR /
ARG moxversion
RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go install -mod mod -trimpath github.com/mjl-/mox@$moxversion
RUN test -f /go/bin/mox && cp /go/bin/mox /bin/mox || cp /go/bin/${TARGETOS}_${TARGETARCH}/mox /bin/mox
RUN CGO_ENABLED=0 GOOS=$goos GOARCH=$goarch go install -mod mod -trimpath github.com/mjl-/mox@$moxversion
RUN test -f /go/bin/mox && cp /go/bin/mox /bin/mox || cp /go/bin/${goos}_${goarch}/mox /bin/mox
# Using latest may break at some point, but will hopefully be convenient most of the time.
FROM --platform=$TARGETPLATFORM docker.io/alpine:latest