fix: shell script linter warnings

- Replace useless cat with input redirection in release.sh and tag.sh
- Use find instead of ls for file listing in release.sh

Signed-off-by: Jose Alekhinne <alekhinejose@gmail.com>

Author: josealekhine

hack/release.sh

@@ -57,7 +57,7 @@ if [ ! -f "$ROOT_DIR/VERSION" ]; then
     exit 1
 fi
 
-VERSION="v$(cat "$ROOT_DIR/VERSION" | tr -d '[:space:]')"
+VERSION="v$(tr -d '[:space:]' < "$ROOT_DIR/VERSION")"
 # -----------------------------------------------------------------------------
 
 # Derived values
@@ -179,7 +179,7 @@ echo "  - Tag: ${TAG_NAME}"
 echo "  - Tag: latest -> ${TAG_NAME}"
 echo ""
 echo "Built artifacts in dist/:"
-ls -1 dist/ctx-* 2>/dev/null | sed 's/^/  /'
+find dist -maxdepth 1 -name 'ctx-*' 2>/dev/null | sed 's/^/  /'
 echo ""
 echo "Next step:"
 echo ""

hack/tag.sh

@@ -26,7 +26,7 @@ if [ ! -f "$ROOT_DIR/VERSION" ]; then
     exit 1
 fi
 
-VERSION="v$(cat "$ROOT_DIR/VERSION" | tr -d '[:space:]')"
+VERSION="v$(tr -d '[:space:]' < "$ROOT_DIR/VERSION")"
 
 echo "Creating tag: $VERSION"