With openwrt in Docker: sh: /tmp/tmp.GLeXQX/rustup-init: not found

[mcandre]

Hiya! I'm trying to install rust via rustup in OpenWrt in Docker, but I'm getting some weird /tmp error.

Source

FROM mcandre/docker-openwrt
RUN opkg update && \
    opkg install curl ca-certificates && \
    curl https://sh.rustup.rs -sSf | sh -s -- -y

Trace

$ docker build -t mcandre/rust:uclibc .
Sending build context to Docker daemon  88.06kB
Step 1/2 : FROM mcandre/docker-openwrt
 ---> dd5c36292b0f
Step 2/2 : RUN opkg update &&     opkg install curl ca-certificates &&     curl https://sh.rustup.rs -sSf | sh -s -- -y
 ---> Running in 0ffa398ac2f4
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/base/Packages.gz.
Updated list of available packages in /var/opkg-lists/chaos_calmer_base.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/base/Packages.sig.
Signature check passed.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/luci/Packages.gz.
Updated list of available packages in /var/opkg-lists/chaos_calmer_luci.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/luci/Packages.sig.
Signature check passed.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/packages/Packages.gz.
Updated list of available packages in /var/opkg-lists/chaos_calmer_packages.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/packages/Packages.sig.
Signature check passed.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/routing/Packages.gz.
Updated list of available packages in /var/opkg-lists/chaos_calmer_routing.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/routing/Packages.sig.
Signature check passed.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/telephony/Packages.gz.
Updated list of available packages in /var/opkg-lists/chaos_calmer_telephony.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/telephony/Packages.sig.
Signature check passed.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/management/Packages.gz.
Updated list of available packages in /var/opkg-lists/chaos_calmer_management.
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/management/Packages.sig.
Signature check passed.
Installing curl (7.40.0-3) to root...
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/base/curl_7.40.0-3_x86_64.ipk.
Installing libcurl (7.40.0-3) to root...
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/base/libcurl_7.40.0-3_x86_64.ipk.
Installing libpolarssl (1.3.14-1) to root...
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/base/libpolarssl_1.3.14-1_x86_64.ipk.
Installing ca-certificates (20150426) to root...
Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/x86/64/packages/base/ca-certificates_20150426_x86_64.ipk.
Configuring libpolarssl.
Configuring libcurl.
Configuring curl.
Configuring ca-certificates.
info: downloading installer
sh: /tmp/tmp.GLeXQX/rustup-init: not found
The command '/bin/sh -c opkg update &&     opkg install curl ca-certificates &&     curl https://sh.rustup.rs -sSf | sh -s -- -y' returned a non-zero code: 1

I suspect that things that deal with /tmp don't run so well in Docker. I'll see if I can cache the rust init script somewhere else and run it manually.

Update

Crap, even when I explicitly download rustup-init.sh and execute it, the script still complains about /tmp stuff.

FROM mcandre/docker-openwrt
RUN opkg update && \
    opkg install curl ca-certificates && \
    curl -o /rustup-init.sh https://raw.githubusercontent.com/rust-lang-nursery/rustup.rs/master/rustup-init.sh && \
    sh /rustup-init.sh -y

[mcandre]

Update: Based on #1273 , I suspect that the "not found" error is more about executable format rather than /tmp things. rustup does not appear to support uClibC systems yet.

[Diggsey]

Correct