community/php8: upgrade to 8.1.0-beta2

- use beta mirror
- riscv64 opcache-jit and fiber-asm are not supported (undefined reference to `getcontext')
- limited to -j2 as linking errors
9 jobs for !22236 with php81 in 393 minutes and 38 seconds (queued for 3 seconds)
detached
Status Job ID Name Coverage
  Lint
failed #453756
docker-alpine x86_64 allowed to fail
lint

00:00:19

 
  Build
passed #453761
docker-alpine ci-build aarch64
build-aarch64

01:46:11

failed #453763
docker-alpine ci-build armhf
build-armhf

01:06:23

failed #453762
docker-alpine ci-build armv7
build-armv7

01:02:59

passed #453760
docker-alpine ci-build ppc64le
build-ppc64le

01:38:20

failed #453764
ci-build riscv64
build-riscv64

05:19:07

passed #453759
docker-alpine ci-build s390x
build-s390x

01:06:07

passed #453758
docker-alpine ci-build x86
build-x86

00:53:20

passed #453757
docker-alpine ci-build x86_64
build-x86_64

00:33:45

 
Name Stage Failure
failed
lint Lint
No job log
failed
build-armv7 Build
No job log
failed
build-armhf Build
No job log
failed
build-riscv64 Build
No job log