fix: Resolve shellcheck warnings

.github/workflows/check.yml

@@ -1,30 +1,35 @@
 on: [workflow_call]
+
 name: "Check"
+
 permissions: {}
 
 jobs:
   shellcheck:
     name: shellcheck
     runs-on: ubuntu-latest
     steps:
-    - 
-      name: Checkout code
-      uses: actions/checkout@v7
-    - parallel:
-      -
-        name: Run ShellCheck
-        uses: ludeeus/action-shellcheck@master
-        env:
-          SHELLCHECK_OPTS: -x --source-path=src -e SC2064 -e SC2114 -e SC2129 -e SC2034 -e SC1087 -e SC2317 -e SC2046
-      -
-        name: Lint Dockerfile
-        uses: hadolint/hadolint-action@v3.3.0
-        with:
-          dockerfile: Dockerfile
-          ignore: DL3008,DL3018,DL3020,DL3029,DL3059,DL4006,DL4001,SC2114,DL3006,DL3027,DL3003,SC2016
-          failure-threshold: warning
       -
-        name: Validate JSON and YML files
-        uses: GrantBirki/json-yaml-validate@v5.0.0
-        with:
-          yaml_exclude_regex: ".*\\kubernetes\\.yml$"
+        name: Checkout code
+        uses: actions/checkout@v7
+      - parallel:
+          -
+            name: Run ShellCheck
+            uses: ludeeus/action-shellcheck@master
+            env:
+              SHELLCHECK_OPTS: >-
+                -x
+                --source-path=src
+                -e SC2129
+                -e SC2034
+                -e SC2317
+          -
+            name: Lint Dockerfile
+            uses: hadolint/hadolint-action@v3.3.0
+            with:
+              dockerfile: Dockerfile
+              ignore: DL3008,DL3018,DL3020,DL3029,DL3059,DL4006,DL4001,DL3006,DL3003,SC2016
+              failure-threshold: warning
+          -
+            name: Validate JSON and YML files
+            uses: GrantBirki/json-yaml-validate@v5.0.0

src/entrypoint.sh

@@ -362,13 +362,14 @@ supercronic -quiet -no-reap /docker.cron &
 CRON_PID="$!"
 wait_process_alive "$CRON_PID" "supercronic" 1 || :
 
-# Trap helper.
 _trap() {
   local func="$1"; shift
   local sig
   TRAP_PID="$BASHPID"
 
   for sig; do
+    # Capture the local callback and signal while registering the trap.
+    # shellcheck disable=SC2064
     trap "$func $sig" "$sig"
   done