The pail in dreams is interpreted as you being very craving person, but only if the pail is empty. The full pail denotes to great things which brings prosperity and abundance. The pail that is full of milk means that you are in the peace of your own mind. No stress is in your life.
Dream dictionary: Pail dream meanings
…Dreaming of full pails of milk, is a sign of fair prospects and pleasant associations. An empty pail is a sign of famine, or bad crops. For a young woman to be carrying a pail, denotes household employment….