If you’re gonna try drying in one of your shipping containers, I can tell you that heavy insulation, multiple big oscillating fans, and a commercial dehuey will be worth the investment. I would strongly consider also erecting a post and cable shade structure above/around the container to prevent it getting blasted by the sun directly. A vine trellised on the south side of the container, even allowed to crawl over the top, will help keep it cooler as well.
AnchorSeal IME, is far superior to other end grain sealers. Doubly important in an environment such as yours.
If funds permit, I would build a single pitch corrugated aluminum structure with the high open side facing north. That will save you from humidity and air movement issues, and the long term electrical cost of running the equipment necessary to mitigate those issues in an enclosed kiln-like space.
I see summer highs in the triple digits at both locations I dry slabs in Northern California, but what seems to be most challenging for me is the extremity of the shift in relative humidity from our hot, dry summers to our cold, wet winters. At least your humidity is much more consistent throughout the year, you just have to prevent your lumber from drying too quickly/unevenly.
I almost forgot one of the most important things - Ratchet straps (min 1000lb rated) cranked around carefully stickered stacks will save you a lot of sadness