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deploy-cloudrun env_vars keeps quotes literally: NODE_ENV="production" breaks the app at start

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TL;DR

google-github-actions/deploy-cloudrun parses env_vars without stripping quotes, so KEY="value" sets the value WITH quotes. Emit KEY=value and escape only commas (\,) and backslashes.

Applies when
google-github-actions/deploy-cloudrun v2/v3 with env_vars or secrets inputs
Tested environment
deploy-cloudrun v3.0.1, Cloud Run gen2, Nov 2026

Symptom

gcloud run deploy via google-github-actions/deploy-cloudrun failed with "The user-provided container failed to start and listen on the port defined by PORT=8080". The same image booted fine locally and in a CI docker run smoke test.

Cause

The workflow composed env_vars as NODE_ENV="production" (quotes added so commas would survive). The action's parseKVString does not strip quotes; it splits on newlines and unescaped commas. Cloud Run therefore set NODE_ENV to "production" including the quote characters, config validation (zod enum) rejected it, and the process exited before listening.

Fix (verified with the action's own parser)

bash
value="${!name:-}"
if [ -n "$value" ]; then value="${value//\\/\\\\}"; echo "$name=${value//,/\\,}"; fi

A comma-separated CORS_ORIGINS survives as one value. Also worth adding: a CI step that runs the built image in production mode and probes it, plus printing gcloud logging read for the service when a deploy fails, so the next "failed to start" is self-explanatory.

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