Read commit SHA from file. Fixes #378

Dockerfile

@@ -65,6 +65,9 @@ RUN ln -s /usr/local/bin/docker-entrypoint.sh /
 ARG COMMIT_SHA="" \
     BRANCH=""
 
+# Put COMMIT_SHA in a file, since Docker managers like Portainer will not use updated ENVs
+RUN echo $COMMIT_SHA > commit-sha.txt
+
 LABEL org.opencontainers.image.title="epicgames-freegames-node" \ 
     org.opencontainers.image.url="https://github.com/claabs/epicgames-freegames-node" \
     org.opencontainers.image.description="Automatically redeem free games promotions on the Epic Games store" \

src/version.ts

@@ -1,9 +1,16 @@
 import axios from 'axios';
+import { readFileSync } from 'fs-extra';
 import { config } from './common/config';
 import L from './common/logger';
 
 const PROJECT_NAME = 'epicgames-freegames-node';
-const { COMMIT_SHA, BRANCH, DISTRO } = process.env;
+const { BRANCH, DISTRO } = process.env;
+let { COMMIT_SHA } = process.env;
+try {
+  COMMIT_SHA = readFileSync('./commit-sha.txt', { encoding: 'utf-8' }).trim();
+} catch (error) {
+  L.debug('Fallback to environment variable commit SHA');
+}
 
 export async function checkForUpdate(): Promise<void> {
   L.info({ COMMIT_SHA, BRANCH, DISTRO }, `Started ${PROJECT_NAME}`);