[Snyk] Security upgrade alpine from 3.13 to 3#2

Open

snyk-bot wants to merge 1 commit intomasterfrom

snyk-fix-904515a8d98d34683351a82aafa2aed1

Commits on Aug 8, 2021

fix: 2.7/alpine3.13/Dockerfile to reduce vulnerabilities
snyk-bot
committed