Adds placeholders for Docker Hub credentials
Adds placeholders for Docker Hub credentials

szpak/jvm-bloggers,kraluk/jvm-bloggers,kraluk/jvm-bloggers,tdziurko/jvm-bloggers,jvm-bloggers/jvm-bloggers,jvm-bloggers/jvm-bloggers,tdziurko/jvm-bloggers,kraluk/jvm-bloggers,tdziurko/jvm-bloggers,tdziurko/jvm-bloggers,kraluk/jvm-bloggers,szpak/jvm-bloggers,szpak/jvm-bloggers,jvm-bloggers/jvm-bloggers,szpak/jvm-bloggers,jvm-bloggers/jvm-bloggers