Implement drone releasename checking

hack/tfw.sh

@@ -33,6 +33,8 @@ release_baseimage()
 {
     [ ! -d "$BASEIMAGE_PATH" ] && return || :
     cd $BASEIMAGE_PATH
+    check_drone_releasename
+
     TAG="$(baseimage_releasename)"
     read -p "Tag and push new TFW version \"${TAG}\"? [y/N]" -r && echo
     if [[ $REPLY =~ ^(y|Y|yes|Yes|YES)$ ]]
@@ -42,6 +44,17 @@ release_baseimage()
     fi
 }
 
+check_drone_releasename()
+{
+    DRONEYML_RELEASENAME="$(grep -oP '(?<=branch:\srefs/tags/).+(?=-.+)' .drone.yml)"
+    ACTUAL_RELEASENAME="$(baseimage_releasename | grep -oP ".+(?=-\d{8})")"
+    if [ "$DRONEYML_RELEASENAME" != "$ACTUAL_RELEASENAME" ]; then
+        echo "Release name '${DRONEYML_RELEASENAME}' in .drone.yml does not match actual release name '${ACTUAL_RELEASENAME}' in VERSION."
+        echo "Please make them match before releasing!"
+        exit 1
+    fi
+}
+
 baseimage_releasename()
 {
     VERSION="$(cat VERSION | head -n 1)"