Jacob Wejendorp
d95244c09b
The __APP_INJECTED_RUNTIME_CONFIG__ value is not always in the main chunk, so we need to find the right chunk to inject for runtime config.
42 lines
1.3 KiB
Bash
Executable File
42 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -Eeuo pipefail
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# Run nginx as root
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sed -i 's/user nginx.*$//' /etc/nginx/nginx.conf
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# Write selected env vars to nginx config
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envsubst '$PORT' < /etc/nginx/conf.d/default.conf.template > /etc/nginx/conf.d/default.conf
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# Inject runtime config into the client
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function inject_config() {
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# Read runtime config from env in the same way as the @backstage/config-loader package
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local config
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config="$(jq -n 'env |
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with_entries(select(.key | startswith("APP_CONFIG_")) | .key |= sub("APP_CONFIG_"; "")) |
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to_entries |
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reduce .[] as $item (
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{}; setpath($item.key | split("_"); $item.value | fromjson)
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)')"
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>&2 echo "Runtime app config: $config"
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local main_js
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main_js="$(grep -l __APP_INJECTED_RUNTIME_CONFIG__ /usr/share/nginx/html/*.chunk.js)"
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echo "Writing runtime config to ${main_js}"
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# escape ' and " twice, for both sed and json
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local config_escaped_1
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config_escaped_1="$(echo "$config" | jq -cM . | sed -e 's/[\\"\x27]/\\&/g')" # \x27 = '
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# escape / and & for sed
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local config_escaped_2
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config_escaped_2="$(echo "$config_escaped_1" | sed -e 's/[\/&]/\\&/g')"
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# Replace __APP_INJECTED_RUNTIME_CONFIG__ in the main chunk with the runtime config
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sed -e "s/__APP_INJECTED_RUNTIME_CONFIG__/$config_escaped_2/" -i "$main_js"
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}
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inject_config
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exec nginx -g 'daemon off;'
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