[Snyk] Security upgrade nginx from alpine to 1.20-alpine

[snyk-bot]

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• webapp/Dockerfile.prod

We recommend upgrading to nginx:1.20-alpine, as this image has only 2 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	400	Out-of-bounds Read SNYK-ALPINE315-FREETYPE-2834869	No Known Exploit
	400	Out-of-bounds Read SNYK-ALPINE315-FREETYPE-2834870	No Known Exploit
	571	Out-of-bounds Read SNYK-ALPINE315-PCRE2-2869383	No Known Exploit
	571	Out-of-bounds Read SNYK-ALPINE315-PCRE2-2869384	No Known Exploit

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information: 🧐 View latest project report

🛠 Adjust project settings

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Learn about vulnerability in an interactive lesson of Snyk Learn.

[codecov[bot]]

Codecov Report

Merging #71 (c270d6f) into dev-2.0 (8cf68d8) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff            @@
##           dev-2.0      #71   +/-   ##
========================================
  Coverage    79.71%   79.71%           
========================================
  Files           18       18           
  Lines          276      276           
========================================
  Hits           220      220           
  Misses          56       56           

:mega: Codecov can now indicate which changes are the most critical in Pull Requests. Learn more