bin/_log.sh: Add shebang to please shellcheck (#4437)

Signed-off-by: Joakim Roubert <joakimr@axis.com>

.github/workflows/static_checks.yml

@@ -80,7 +80,6 @@ jobs:
       run: |
         find ./bin -type f \
         ! -name docker-build-proxy \
-        ! -name _log.sh \
         ! -name minikube-start-hyperv.bat \
         ! -name test-cleanup \
         ! -name _test-run.sh \
@@ -95,4 +94,4 @@ jobs:
       # actions/checkout@v2
       uses: actions/checkout@722adc6
     - name: Markdown lint
-      run: bin/markdownlint-all
+      run: bin/markdownlint-all

bin/_log.sh

@@ -1,3 +1,4 @@
+#!/bin/sh
 set -eu
 
 # build debug logging is disabled by default; enable with BUILD_DEBUG=1