Add openssl to Dockerfile
Add openssl to Dockerfile

Fix missing openssl dependency.
mroote/factorio-server-manager,sean-callahan/factorio-server-manager,MajorMJR/factorio-server-manager,sean-callahan/factorio-server-manager,MajorMJR/factorio-server-manager,sean-callahan/factorio-server-manager,MajorMJR/factorio-server-manager,mroote/factorio-server-manager,MajorMJR/factorio-server-manager,sean-callahan/factorio-server-manager,mroote/factorio-server-manager,mroote/factorio-server-manager