I cannot load a font from an S3 Inputstream in JRE 8. I do not have issue if a system is installed with JRE 7, JDK 7, or even JDK 8.
val fontInputStream = s3
For alpine and openjdk : Use RUN apk --update add fontconfig ttf-dejavu Worked for me.
RUN apk --update add fontconfig ttf-dejavu