Merge pull request #68 from SuperSandro2000/docker

Docker improvements

backend/.dockerignore

@@ -1,2 +1,4 @@
 node_modules
-*.exe
+*.exe
+docker-compose.yml
+Dockerfile

backend/Dockerfile

@@ -1,24 +1,18 @@
 FROM alpine:3.11
 
 RUN \ 
-apk add --update npm python ffmpeg && \
-apk add --repository http://dl-3.alpinelinux.org/alpine/edge/testing/ \
+apk add --no-cache npm python ffmpeg && \
+apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing/ \
     atomicparsley
 
-# Change directory so that our commands run inside this new directory
 WORKDIR /app
 
-# Copy dependency definitions
-COPY ./ /app/
+COPY package.json /app/
 
-# Change directory to backend
-WORKDIR /app
-
-# Install dependencies on backend
 RUN npm install
 
-# Expose the port the app runs in
+COPY ./ /app/
+
 EXPOSE 17442
 
-# Run the specified command within the container.
-CMD [ "node", "app.js" ]
+CMD [ "node", "app.js" ]