Merge pull request #1188 from XhmikosR/patch-2

Update Dockerfile

.devcontainer/Dockerfile

@@ -1,11 +1,14 @@
-FROM node:21-alpine3.19
+FROM node:22-alpine3.21
+
 RUN apk add --no-cache \
     git \
     nano \
     openssh \
     py3-pip
+
 ENV USER node
-USER $USER
+USER ${USER}
+
 # python packages (as mkdocs) are installed in the user's home directory
-# but we need them to be accessible from $PATH
-ENV PATH="$PATH:/home/$USER/.local/bin"
+# but we need them to be accessible from ${PATH}
+ENV PATH="${PATH}:/home/${USER}/.local/bin"