Support .fdroid.yml.

entrypoint

@@ -3,10 +3,13 @@
 REPO="$(pwd)"
 export PATH="/opt/gradle/bin:$PATH"
 
-if [ -d "fdroid" ]; then
-    cp -Rv fdroid/* /fdroiddata/metadata;
+if [ ! -f ".fdroid.yml" ] && [ ! -f ".fdroid.json" ]; then
+    if [ -d "fdroid" ]; then
+        cp -Rv fdroid/* /fdroiddata/metadata;
+    fi
+
+    cd /fdroiddata
+    find ./metadata -type f -name "*.txt" -exec sed -i "s:%REPO:$REPO:g" {} +
 fi
 
-cd /fdroiddata
-find ./metadata -type f -name "*.txt" -exec sed -i "s:%REPO:$REPO:g" {} +
-fdroid $@
+fdroid "$@"