Rename build/ to builders/ to avoid looking like build output

builders/linux.riscv64/build

@@ -0,0 +1,21 @@
+#!/bin/sh
+set -xe
+IFS=';'
+{
+  mkdir -p /tmp/scratch
+  cd /tmp/scratch
+  tar xzv --strip-components=1
+  chmod +x striptests && ./striptests
+  # Use a freeze file to ensure we use the same dependencies we cached during
+  # the docker image build. We don't want to spend time compiling anything new.
+  cp /etc/cabal.project.freeze .
+  mkdir "$TARGETNAME"
+  # Retry in case of random segfault
+  scutil retry 3 cabal build --enable-executable-static
+  find . -name shellcheck -type f -exec mv {} "$TARGETNAME/" \;
+  ls -l "$TARGETNAME"
+  "$TARGET-strip" -s "$TARGETNAME/shellcheck"
+  ls -l "$TARGETNAME"
+  "$TARGETNAME/shellcheck" --version
+} >&2
+tar czv "$TARGETNAME"