Issue with installation instructions

[p4cketw0lf]

In step 2 of installation instructions .16 or more.

user@netshot:~$ sudo /usr/lib/jvm/graalvm/bin/gu install python
Downloading: Release index file from [oca.opensource.oracle.com](http://oca.opensource.oracle.com/)
Error: Error reading component list: https://oca.opensource.oracle.com/gds/meta-data.json

not sure how to handle this error

[mcyclone]

you can use GraalVM CE 22.2.0

GRAALVER="22.2.0"

[SCadilhac]

The next release of Netshot will work with a newer version of GraalVM. For 0.18.x I've not tested another version than 21.3.0. The Python component is not absolutely necessary (if you don't plan to use Python scripts). You can still install it by manually downloading the package:

wget https://github.com/oracle/graalpython/releases/download/vm-21.3.0/python-installable-svm-java11-linux-amd64-21.3.0.jar
sudo /usr/lib/jvm/graalvm/bin/gu -L install ./python-installable-svm-java11-linux-amd64-21.3.0.jar

[anli77]

For those that like me find this, to install python the LLVM toolchains is also needed, and since meta-data.json file is no longer available, the LLVM module also fails, so this added to our docker spec fixed that.

RUN curl -L https://github.com/oracle/graalpython/releases/download/vm-$GRAALVER/python-installable-svm-java11-linux-amd64-$GRAALVER.jar --remote-name RUN curl -L https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-$GRAALVER/llvm-toolchain-installable-java11-linux-amd64-$GRAALVER.jar --remote-name RUN /usr/lib/jvm/graalvm/bin/gu -L install -D llvm-toolchain-installable-java11-linux-amd64-$GRAALVER.jar RUN /usr/lib/jvm/graalvm/bin/gu -L install -D python-installable-svm-java11-linux-amd64-$GRAALVER.jar

Tested to work on 21.3.0, using GraalVM 22.2.0 did not work for us.

[SCadilhac]

Netshot 0.19 now using new version of GraalVM JRE, the install guide has been updated.