Update Dockerfile to include JSON library and command

Author: CoolyDucks

Dockerfile

@@ -1,6 +1,12 @@
 FROM opensuse/tumbleweed:latest
+
 RUN zypper refresh && \
     zypper --non-interactive install lua54
+
 WORKDIR /app
-COPY . .
-CMD [ "lua5.4" ]
+
+COPY json/ .
+
+ENV LUA_PATH="./?.lua;;"
+
+CMD [ "lua5.4", "-e", "local j = require('json'); print('JSON Library Loaded Successfully inside Tumbleweed!')" ]