fix

Author: Azathothas

Github/Runners/alpine-rust.dockerfile

@@ -2,16 +2,20 @@
 #------------------------------------------------------------------------------------#
 #https://hub.docker.com/r/pkgforge/alpine-rust
 ARG ARCH
-ARG TOOLCHAIN
 FROM "ghcr.io/pkgforge/devscripts/alpine-slim:${ARCH}"
+ARG TOOLCHAIN
+ENV R_TOOLCHAIN="${TOOLCHAIN}"
 #------------------------------------------------------------------------------------#
 ##Setup Rust
 RUN <<EOS
   set +e
+  if [ -z "$R_TOOLCHAIN" ] || [ "$R_TOOLCHAIN" = "" ]; then
+     exit 1
+  fi
   apk update && apk upgrade --no-cache --no-interactive 2>/dev/null
   apk add rustup --latest --upgrade --no-cache --no-interactive 2>/dev/null
   hash -r >/dev/null 2>&1
-  rustup-init --default-toolchain "${TOOLCHAIN}" --no-modify-path -y || true
+  rustup-init --default-toolchain "$R_TOOLCHAIN" --no-modify-path -y || true
   if [ -d "/root/.rustup/toolchains" ] && [ "$(du -sm '/root/.rustup/toolchains' | cut -f1)" -gt 10 ]; then
     find "/root/.rustup/toolchains" -type d \( -path '*/share/bash' -o -path '*/share/doc' -o -path '*/share/fish' \
       -o -path '*/share/man' -o -path '*/share/zsh' \) -exec rm -rvf "{}" + 2>/dev/null || true