Use OpenJDK

[gabegorelick]

Any reason not to use OpenJDK (except for backwards compatibility at this point)? The Oracle JRE obviously has licensing issues. I know lots of people complain about OpenJDK issues, but I've been running it for years without incident.

[benmccann]

I think that having both available is nice. I typically use OpenJDK, but there are certain pieces of software I've used in the past that say they're only supported on Oracle. I think the user should be able to choose from OpenJDK/Oracle and Java 6/7/8 and JRE/JDK

[gabegorelick]

Choice is fine, but I don't think the Oracle JRE, installed from a PPA with
dubious legality, should be the default. Especially since this image is
used by so many others, many images will unknowingly install it. If you
absolutely can't use OpenJDK, then by all means, install the Oracle
packages. But that should not be the default for the "official" Java
image.

On Tuesday, July 22, 2014, Ben McCann notifications@github.com wrote:

I think that having both available is nice. I typically use OpenJDK, but
there are certain pieces of software I've used in the past that say they're
only supported on Oracle. I think the user should be able to choose from
OpenJDK/Oracle and Java 6/7/8

—
Reply to this email directly or view it on GitHub
#6 (comment).

[benmccann]

I don't think there should be a "Java" image at all. Better to be more explicit. E.g. I would rename this package oracle-jre-7 so that you know it's for Oracle Java, for a JRE (not a JDK), and so that it's for Java 7. Right now none of those things are obvious. I would use similar naming for any OpenJDK package

[gabegorelick]

That works too.

On Tuesday, July 22, 2014, Ben McCann notifications@github.com wrote:

I don't think there should be a "Java" image at all. Better to be more
explicit. E.g. I would rename this package oracle-jre-7 so that you know
it's for Oracle Java, for a JRE (not a JDK), and so that it's for Java 7.
Right now none of those things are obvious. I would use similar naming for
any OpenJDK package

—
Reply to this email directly or view it on GitHub
#6 (comment).

[2xyo]

👍 @benmccann

[pilwon]

Just so everyone here knows about some background -- We originally created dockerfile/java image specifically for dockerfile/elasticsearch, that is still the only image created at Dockerfile Project with this dockerfile/java image as its dependency. The decisions for oracle-java vs. openjdk and v6 vs. v7 vs.v8 were made solely for that purpose as well. (the elasticsearch community still recommends using oracle java 7 for the best performance)

However, we agree the decisions we originally made should probably be changed now, due to concerns raised by @benmccann @gabegorelick here and there, as there are a lot more Docker users using this image not just for dockerfile/elasticsearch.

[pilwon]

@gabegorelick @benmccann @2xyo Please see https://github.com/dockerfile/java#docker-tags

[benmccann]

Awesome. Thanks!

[benmccann]

I might have distinguished between jdk/jre for the oracle images just as you did for the openjdk images

[pilwon]

@benmccann They don't seem to support it https://launchpad.net/~webupd8team/+archive/ubuntu/java

If you know a good, reliable way to do this, please submit PR.

[benmccann]

Ah, I see. Thank you