Require docker image for ARM64

[odidev]

Hi Team,

I am checking on adding arm64 support in Travis-CI for the Open Service Broker API package. But I was facing an issue in pulling openapitools/openapi-generator-cli image for arm64 as it is not available in the docker hub. So I tried to build an openapi-generator image locally on arm64 machine and found that 3.6.3-jdk-11-openj9 image is not available for arm64. So I replaced this image with 3.6.3-jdk-11 and I was successful in building an openapi-generator docker image in my local arm64 machine.

If you are interested in uploading an arm64 image, I can raise a PR for the changes required to build an arm64 image. It will be very helpful if this image is available for the arm64 platform.

[wing328]

@odidev yes, please open a PR and we'll review.

[odidev]

Thanks for the reply.

I have just updated the base image in the dockerfile. Please check this commit for the same. After checking the repository, to upload the docker image we need to add a release process in the Travis file. For that, we need to add an arm64 job in Travis or we can use docker buildx command to build image for both amd64 and arm64 platforms. To use buildx with docker we require docker version 19.03, which is available only from focal and it seems we have issues when we update this package to focal from xenial distro.
Do you have any plans in updating distro from xenial to focal?
I have tried updating distro to focal and was getting below issue:

E: Package 'g++-5' has no installation candidate
apt-get.diagnostics
apt-get install failed
The command "sudo -E apt-get -yq --no-install-suggests --no-install-recommends $(travis_apt_get_options) install g++-5" failed and exited with 100 during .

Please refer below report for issue facing with focal distro:
https://travis-ci.com/github/odidev/openapi-generator/jobs/428488855

When i upgraded package g++-5 to g++-7 , jdk8 to jdk11 and python3.6 to python3.7 then also i am getting the below issue:

Error { kind: ToolNotFound, message: "Failed to find tool. Is `gcc-5` installed?" }
Failed to find OpenSSL development headers.

I am happy to contribute for updating distros, but as a start can I get suggestion on above issue?