diff --git a/devc.sh b/devc.sh
index 892ec35..d24157c 100755
--- a/devc.sh
+++ b/devc.sh
@@ -29,8 +29,8 @@ default_args() {
   [[ -e "${SSH_AUTH_SOCK:-}" ]] && run_opts+=("-v" "$SSH_AUTH_SOCK:/run/user/1000/ssh-auth-sock")
 
   # Load custom container config.
-  local config_file="$(dirname "$(realpath "$0")")/containers/$name/config.sh"
-  [[ -f "$config_file" ]] && source "${config_file}"
+  local config_file="${BASH_SOURCE[0]%/*}/containers/$name/config.sh"
+  [[ -f "$config_file" ]] && source "$config_file"
 }
 
 # param_args parses CLI arguments into podman run options.