feat: add support of maven_settings

entrypoint.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Entrypoint: write `MAVEN_SETTINGS` or decode `MAVEN_SETTINGS_BASE64`
+# into ~/.m2/settings.xml (MAVEN_SETTINGS_BASE64 takes precedence),
+# then exec the container command.
+
+M2_DIR="${HOME:-/root}/.m2"
+
+if [[ -n "${MAVEN_SETTINGS_BASE64:-}" ]]; then
+  mkdir -p "$M2_DIR"
+  # Decode base64 content and write it. If decoding fails the script will error.
+  printf '%s' "$MAVEN_SETTINGS_BASE64" | base64 -d > "$M2_DIR/settings.xml"
+  chmod 644 "$M2_DIR/settings.xml" || true
+elif [[ -n "${MAVEN_SETTINGS:-}" ]]; then
+  mkdir -p "$M2_DIR"
+  # Write the variable contents exactly as provided
+  printf '%s' "$MAVEN_SETTINGS" > "$M2_DIR/settings.xml"
+  chmod 644 "$M2_DIR/settings.xml" || true
+fi
+
+if [[ "$#" -eq 0 ]]; then
+  exec "$SHELL" || exec /bin/sh
+fi
+
+exec "$@"