added aliases and updated docker file

Dockerfile

@@ -1,10 +1,5 @@
-FROM python:3.6-slim
+FROM gorialis/discord.py
 WORKDIR /app
 COPY . .
-RUN apt-get clean \
-    && apt-get -y update
-RUN apt-get -y install nginx \
-    && apt-get -y install python3-dev \
-    && apt-get -y install build-essential
 RUN pip install -Ur requirements.txt
 CMD ["python", "Run.py"]

app/bot/cogs/app.py

@@ -161,12 +161,12 @@ class app(commands.Cog):
 
 
     @commands.has_permissions(administrator=True)
-    @commands.command()
+    @commands.command(aliases=['plexadd'])
     async def plexinvite(self, ctx, email):
         await self.addtoplex(email, ctx.channel)
     
     @commands.has_permissions(administrator=True)
-    @commands.command()
+    @commands.command(aliases=['plexrm'])
     async def plexremove(self, ctx, email):
         await self.removefromplex(email, ctx.channel)