OG image: automatically generate image on container start (blockscout…

…#2496)

* make script to generate OG image at container start

* add prod service URL

* remove og_image.png

* update path to file

* [skip ci] remove app url from payload

.gitignore

@@ -17,6 +17,7 @@
 /public/icons/sprite.svg
 /public/icons/sprite.*.svg
 /public/icons/README.md
+/public/static/og_image.png
 /public/sitemap.xml
 /public/robots.txt
 /analyze

package.json

@@ -33,6 +33,7 @@
     "test:jest": "jest",
     "test:jest:watch": "jest --watch",
     "favicon:generate:dev": "./tools/scripts/favicon-generator.dev.sh",
+    "og-image:generate:dev": "./tools/scripts/og-image-generator.dev.sh",
     "sitemap:generate:dev": "./tools/scripts/sitemap-generator.dev.sh",
     "monitoring:prometheus:local": "docker run --name blockscout_prometheus -d -p 127.0.0.1:9090:9090 -v $(pwd)/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus",
     "monitoring:grafana:local": "docker run -d -p 4000:3000 --name=blockscout_grafana --user $(id -u) --volume $(pwd)/grafana:/var/lib/grafana grafana/grafana-enterprise"