Fix <<< syntax not supported in some shells.

Author: landwehrj

install.sh

@@ -124,16 +124,16 @@ run_with_timeout() {
 
     local count=0
     while [ $count -lt "$timeout" ] && kill -0 "$pid" 2>/dev/null; do
-      sleep 1
-      count=$((count + 1))
+        sleep 1
+        count=$((count + 1))
     done
 
     if kill -0 "$pid" 2>/dev/null; then
-      kill -TERM "$pid"
-      wait "$pid" 2>/dev/null
-      cat "$tmpfile"
-      rm -f "$tmpfile"
-      return 124  # Timeout
+        kill -TERM "$pid"
+        wait "$pid" 2>/dev/null
+        cat "$tmpfile"
+        rm -f "$tmpfile"
+        return 124  # Timeout
     fi
 
     wait "$pid"
@@ -159,18 +159,18 @@ check_requirements() {
     # Check that Docker/Podman is running and the user has permissions to use it.
     if ! output=$(run_with_timeout 10 $container_tool ps); then
         log_error "$container_tool is either not running or this user doesn't have permission to use $container_tool. Make sure $container_tool is started. If $container_tool is running, it is likely the user doesn't have permission to use $container_tool. Either run the script as root or contact your system administrator. Output:"
-        while IFS= read -r line; do
+        printf '%s\n' "$output" | while IFS= read -r line; do
             log_error "  $line"
-        done <<< "$output"
+        done
         exit 1
     fi
 
     # Check if Docker Compose or Podman-Compose is installed.
     if ! output=$(run_with_timeout 10 $compose_tool version); then
         log_error "$container_tool is installed but $compose_tool is not. Please install $compose_tool first. Output:"
-        while IFS= read -r line; do
+        printf '%s\n' "$output" | while IFS= read -r line; do
             log_error "  $line"
-        done <<< "$output"
+        done
         [ "$container_tool" = "docker" ] && log_info "Visit https://docs.docker.com/compose/install/ for installation instructions."
         exit 1
     fi
@@ -318,9 +318,9 @@ deploy_containers() {
     log_info "Pulling latest container images."
     if ! output=$(run_with_timeout 300 $compose_tool pull); then
         log_error "Failed to pull container images. Output:"
-        while IFS= read -r line; do
+        printf '%s\n' "$output" | while IFS= read -r line; do
             log_error "  $line"
-        done <<< "$output"
+        done
         exit 1
     fi