I’m trying to install openjdk-8-jre vie custom DockerFile for nginx, as I build the docker images for my composer. But I’m hitting this error message.
Package openjdk-8-jre-headless is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'openjdk-8-jre-headless' has no installation candidate
Here is the part from Dockerfile:
# Install openjdk and java cacerts RUN apt-get update && apt-get install -y openjdk-8-jre-headless ca-certificates-java
If I install java directly from the console, by using exact same command without RUN, no problem with the package. But as I try installing it from the Dockerfile, I hit the error. I have understood that Docker uses same repos as the machine where docker is running? Ubuntu is version 16.04.