Use shared node base image. node != javascript

Whoops! I was about to add javascript, but I see that I have a whole
language container dedicated to node (which isn't a language at all). So
cleaned all that up.

Author: frison

300-node/Dockerfile

@@ -0,0 +1,7 @@
+FROM 100hellos/000-base:local
+
+RUN sudo \
+  apk add --no-cache \
+    nodejs npm
+
+

node/Dockerfile javascript/Dockerfile

@@ -1,9 +1,5 @@
 # syntax=docker/dockerfile:1
 # escape=\
-FROM 100hellos/000-base:local
-
-RUN sudo \
-  apk add --no-cache \
-    nodejs
+FROM 100hellos/300-node:local
 
 COPY --chown=human:human ./files /hello-world

node/Makefile javascript/Makefile

@@ -1,10 +1,7 @@
 # syntax=docker/dockerfile:1
 # escape=\
-FROM 100hellos/000-base:local
+FROM 100hellos/300-node:local
 
-RUN sudo \
-  apk add --no-cache \
-    nodejs npm \
-  && sudo npm i -g typescript
+RUN sudo npm i -g typescript
 
 COPY --chown=human:human ./files /hello-world