Method for manufacturing container and apparatus for manufacturing container

An apparatus for manufacturing a container made of metal, including a bottom portion and a body portion, open on an upper face side, and having a shape in which the body portion expands outward toward the upper face side, the apparatus comprising:

• a plurality of bottom drawing dies including diameter reducing dies that have hole portions with smaller diameters than an outer diameter of a cup body made of metal and having a bottomed cylindrical shape and are configured to reduce a diameter of the cup body along a cylindrical axis direction from a bottom side of the cup body,
• wherein the plurality of bottom drawing dies include an air mechanism configured to apply pressure to an inside of the cup body by inflow of gas into the cup body,
• wherein the apparatus performs (a) reducing the diameter of the cup body by operating the diameter reducing die along the cylindrical axis direction from the bottom side,
• step (a) is repeated a plurality of times, and
• in step (a), pressure is applied by the air mechanism to the inside of the cup body by inflow of gas into the cup body.