Dockworkers at ports from Maine to Texas began walking picket lines early Tuesday in a strike over wages and automation that could reignite inflation and cause shortages of goods if it goes on more than a few weeks.The contract between the ports and about 45,000 members of the International Longshoremen’s Association expired at midnight, and even though progress was reported in talks on Monday, the workers went on strike. The strike affecting 36 ports is the first by the union since 1977.Workers began picketing at the Port of Philadelphia shortly after midnight, walking in a circle at a rail crossing outside the port and chanting “No work without a fair contract.”The union had message boards on the side of a truck reading: “Automation Hurts Families: ILA Stands For Job Protection.”Local ILA president Boise Butler said workers want a fair contract that doesn’t allow automation of their jobs.Shipping companies made billions …