feat(lua): use external luarocks spec file

Author: thomasleplus

build.sh

@@ -21,7 +21,7 @@ RUN apk upgrade --no-cache \
 COPY openid-connect-provider-debugger-0.0.0.rockspec /tmp/openid-connect-provider-debugger-0.0.0.rockspec
 
 # We let lua-resty-session get pulled transitively to ensure compatibility
-RUN lua -e 'dofile("/tmp/openid-connect-provider-debugger-0.0.0.rockspec"); for _, dep in ipairs(dependencies) do local package, version = dep:match("^(.+)%s*==%s*(.+)$"); if package and version then print(package .. " " .. version) end end' | while read package version ; do \
+RUN luajit -e 'dofile("/tmp/openid-connect-provider-debugger-0.0.0.rockspec"); for _, dep in ipairs(dependencies) do local package, version = dep:match("^(.+)%s*==%s*(.+)$"); if package and version then print(package .. " " .. version) end end' | while read package version ; do \
       luarocks install "${package}" --pin "${version}" ; \
     done ; \
     rm -f /tmp/openid-connect-provider-debugger-0.0.0.rockspec