I have always seen it recommended that soilless mix, or at least sterile mix, be used in containers. I believe there is a chance of disease if you put garden soil in containers.
Also it is too heavy and cakes up? As for adding nutrients, you can add slow release fertilizer granules into the mix when you plant, or include the fertilizers in your water.
What types of containers are you planning on using? What are they made of?
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