Add local buildkite CI runner

ci/.gitignore

@@ -0,0 +1,2 @@
+/node_modules/
+/package-lock.json

ci/run-local.sh

@@ -0,0 +1,19 @@
+#!/bin/bash -e
+#
+# Run the entire buildkite CI pipeline locally for pre-testing before sending a
+# Github pull request
+#
+
+cd "$(dirname "$0")/.."
+BKRUN=ci/node_modules/.bin/bkrun
+
+if [[ ! -x $BKRUN ]]; then
+  (
+    set -x
+    cd ci/
+    npm install bkrun
+  )
+fi
+
+set -x
+./ci/node_modules/.bin/bkrun ci/buildkite.yml

ci/shellcheck.sh

@@ -6,7 +6,7 @@ cd "$(dirname "$0")/.."
 
 set -x
 docker pull koalaman/shellcheck
-find . -name "*.sh" -not -regex ".*/.cargo/.*" -print0 \
+find -E . -name "*.sh" -not -regex ".*/(.cargo|node_modules)/.*" -print0 \
   | xargs -0 \
       docker run -w /work -v "$PWD:/work" \
         koalaman/shellcheck --color=always --external-sources --shell=bash