Add info about GitLab CI provider CI_NODE_INDEX starts from 1 instead of 0 in docs for knapsack
Add info about GitLab CI provider CI_NODE_INDEX starts from 1 instead of 0 in docs for knapsack

KnapsackPro/docs.knapsackpro.com,KnapsackPro/docs.knapsackpro.com,KnapsackPro/docs.knapsackpro.com