28 lines
698 B
Bash
28 lines
698 B
Bash
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#!/bin/sh
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# Substitute environment variables in YAML config templates before starting the service.
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# Usage: entrypoint.sh <binary> -f <config.yaml>
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#
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# The YAML file is treated as a template with ${VAR} placeholders.
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# envsubst replaces them with actual environment variable values at container start time.
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set -e
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BINARY="$1"
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shift
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CONFIG_FILE=""
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for arg in "$@"; do
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case "$prev" in
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-f) CONFIG_FILE="$arg" ;;
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esac
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prev="$arg"
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done
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if [ -n "$CONFIG_FILE" ] && [ -f "$CONFIG_FILE" ]; then
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# Replace ${VAR} placeholders with environment variable values
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envsubst < "$CONFIG_FILE" > "${CONFIG_FILE}.tmp"
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mv "${CONFIG_FILE}.tmp" "$CONFIG_FILE"
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fi
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exec "$BINARY" "$@"
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