repo: Add/respect NO_VERIFY .env var (envoyproxy#22321)

Signed-off-by: Ryan Northey <[email protected]>

Author: phlax

Diff for: support/README.md

@@ -16,13 +16,25 @@ This will set up the development support toolchain automatically. The toolchain
 uses git hooks extensively, copying them from `support/hooks` to the `.git`
 folder.
 
-The commit hook checks can be skipped using the `-n` / `--no-verify` flags, as
+The commit hook checks can be skipped using the `--no-verify` flags, as
 so:
 
 ```bash
 git commit --no-verify
 ```
 
+You can also do this by adding `NO_VERIFY` to `.env`, for example:
+
+```console
+$ echo NO_VERIFY=1 >> .env
+```
+
+Or settting it in your environment:
+
+```console
+$ export NO_VERIFY=1
+```
+
 ## Functionality
 
 Currently the development support toolchain exposes two main pieces of

Diff for: support/bootstrap

@@ -47,12 +47,12 @@ fi
 HOOKS_DIR="${DOT_GIT_DIR}/hooks"
 HOOKS_DIR_RELPATH=$(relpath "${HOOKS_DIR}" "$(dirname "$0")")
 
-if [ ! -e "${HOOKS_DIR}/prepare-commit-msg" ]; then
+if [[ -n "$REINSTALL_HOOKS" ]] || [[ ! -e "${HOOKS_DIR}/prepare-commit-msg" ]]; then
   echo "Installing hook 'prepare-commit-msg'"
   ln -sf "${HOOKS_DIR_RELPATH}/hooks/prepare-commit-msg" "${HOOKS_DIR}/prepare-commit-msg"
 fi
 
-if [ ! -e "${HOOKS_DIR}/pre-push" ]; then
+if [[ -n "$REINSTALL_HOOKS" ]] || [[ ! -e "${HOOKS_DIR}/pre-push" ]]; then
   echo "Installing hook 'pre-push'"
   ln -sf "${HOOKS_DIR_RELPATH}/hooks/pre-push" "${HOOKS_DIR}/pre-push"
 fi

Diff for: support/hooks/pre-push

@@ -9,9 +9,20 @@
 #
 # $ ln -s ../../support/hooks/pre-push .git/hooks/pre-push
 
+if [[ -e .env ]]; then
+    # shellcheck disable=SC1091
+    . .env
+fi
+
+if [[ -n "$NO_VERIFY" ]]; then
+    exit 0
+fi
+
 DUMMY_SHA=0000000000000000000000000000000000000000
 
-echo "Running pre-push check; to skip this step use 'push --no-verify'"
+# shellcheck disable=SC2016
+echo 'Running pre-push check; to skip this step use `push --no-verify` or add `NO_VERIFY=1` to `.env`'
+echo
 AUTHOR=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/\1/p')
 
 # shellcheck disable=SC2034