Actually do ignore node_modules everywhere

.dockerignore matching rules differ from .gitignore, unfortunately.

Drive-by: Typo

Author: MarcelWaldvogel

.dockerignore

@@ -1,9 +1,9 @@
-node_modules/
+**/node_modules/
 docs/
 Dockerfile
 *.md
 .git
 .gitignore
 .gitmodules
 docker-compose.yml
-docker-compose-local.yml
+docker-compose-local.yml

Dockerfile

@@ -22,7 +22,7 @@ RUN cd /app/shared && npm install --production
 RUN cd /app/server && npm install --production
 RUN cd /app/zone-mta && npm install --production
 
-# Later, copy the app files. That improves development speed as buiding the Docker image will not have
+# Later, copy the app files. That improves development speed as building the Docker image will not have
 # to download and install all the NPM dependencies every time there's a change in the source code
 COPY . /app