Troubles with R2DBC URL scheme

[YuryKorovko]

Hi there, I am migrating spring boot application form jdbc to r2dbc stack. I followed this guide https://java.testcontainers.org/modules/databases/r2dbc/
here is how I configured applicaiton.yml for test

spring:
  r2dbc:
    url: r2dbc:tc:postgresql:///test?TC_IMAGE_TAG=14.0

the list of the dependencies is the following

    implementation("org.postgresql:r2dbc-postgresql:1.0.4.RELEASE")
    integTestImplementation("org.testcontainers:r2dbc")
    integTestImplementation("org.testcontainers:postgresql")
    integTestImplementation("org.testcontainers:junit-jupiter")

the version of testcontainers libraries is 1.19.1
but when I am trying to run any test I am getting the following error
io.r2dbc.postgresql.PostgresqlConnectionFactory$PostgresConnectionException: [08003] Cannot connect to localhost/<unresolved>:32781
what I am worried about is why there is "unresolved" , like something happened during the parsing the url string.
Could you help me to understand what I am doing wrong pls ?