To find the wholesale cost of each container of juice, let \( x \) be the wholesale cost. The restaurant marks up the wholesale cost by 75%, which can be expressed as:
\[ \text{Selling Price} = x + 0.75x = 1.75x \]
According to the problem, the markup amount is given as $0.90. The markup amount can also be calculated as:
\[ \text{Markup} = \text{Selling Price} - \text{Wholesale Cost} = 1.75x - x = 0.75x \]
Since the markup is $0.90, we can set up the equation:
\[ 0.75x = 0.90 \]
Now, we can solve for \( x \):
\[ x = \frac{0.90}{0.75} \]
Calculating this gives:
\[ x = 1.20 \]
Therefore, the restaurant pays $1.20 for each container of juice wholesale.
The answer is \( \boxed{1.20} \).