buildx: stuck at pushing image to docker hub

I created a build context to use my local machine amd64 and a remote Rpi arm/v7

docker buildx ls
NAME/NODE DRIVER/ENDPOINT             STATUS  PLATFORMS
multi *   docker-container                    
  multi0  unix:///var/run/docker.sock running linux/amd64
  multi1  ssh://root@loraserver.local running linux/arm/v7, linux/arm/v6
default   docker                              
  default default                     running linux/amd64

The build process seems to gets stuck at pushing the image.

docker buildx build --platform linux/amd64,linux/arm/v7 -t arribada/gateway --push --progress=plain  .

It is a simple golang app

FROM --platform=$BUILDPLATFORM golang:alpine AS build
RUN apk add --no-cache git
COPY ./ /tmp/builder/
WORKDIR /tmp/builder/
RUN CGO_ENABLED=0 go build  -o main .
FROM alpine
COPY --from=build main /usr/local/bin/
CMD /usr/local/bin/main

docker buildx build --platform linux/amd64,linux/arm/v7 -t arribada/gateway --push --progress=plain --no-cache .
#1 [internal] booting buildkit
#1 starting container buildx_buildkit_multi1
#1 starting container buildx_buildkit_multi1 8.2s done
#1 DONE 8.2s

#3 [internal] load .dockerignore
#3 transferring context: 2B done
#3 DONE 0.1s

#2 [internal] load build definition from Dockerfile
#2 transferring dockerfile: 32B done
#2 DONE 0.1s

#5 [linux/amd64 internal] load metadata for docker.io/library/golang:alpine
#5 DONE 1.9s

#4 [linux/amd64 internal] load metadata for docker.io/library/alpine:latest
#4 DONE 2.0s

#7 [linux/amd64 build 1/5] FROM docker.io/library/golang:alpine@sha256:87e5...
#7 resolve docker.io/library/golang:alpine@sha256:87e527712342efdb8ec5ddf2d57e87de7bd4d2fedf9f6f3547ee5768bb3c43ff done
#7 CACHED

#6 [linux/amd64 stage-1 1/2] FROM docker.io/library/alpine@sha256:6a92cd1fc...
#6 resolve docker.io/library/alpine@sha256:6a92cd1fcdc8d8cdec60f33dda4db2cb1fcdcacf3410a8e05b3741f44a9b5998 done
#6 CACHED

#9 [internal] load build context
#9 transferring context: 119B done
#9 DONE 0.1s

#8 [linux/amd64 build 2/5] RUN apk add --no-cache git
#8 0.272 fetch http://dl-cdn.alpinelinux.org/alpine/v3.10/main/x86_64/APKINDEX.tar.gz
#8 0.662 fetch http://dl-cdn.alpinelinux.org/alpine/v3.10/community/x86_64/APKINDEX.tar.gz
#8 0.890 (1/5) Installing nghttp2-libs (1.38.0-r0)
#8 0.939 (2/5) Installing libcurl (7.65.1-r0)
#8 0.998 (3/5) Installing expat (2.2.7-r0)
#8 1.044 (4/5) Installing pcre2 (10.33-r0)
#8 1.107 (5/5) Installing git (2.22.0-r0)
#8 1.753 Executing busybox-1.30.1-r2.trigger
#8 1.758 OK: 21 MiB in 20 packages
#8 DONE 1.9s

#10 [linux/amd64 build 3/5] COPY ./ /tmp/builder/
#10 DONE 0.1s

#11 [linux/amd64 build 4/5] WORKDIR /tmp/builder/
#11 DONE 0.1s

#12 [linux/amd64 build 5/5] RUN CGO_ENABLED=0 go build  -o main .
#12 0.323 go: finding github.com/pkg/errors v0.8.1
#12 0.324 go: finding github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
#12 0.324 go: finding github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4
#12 0.324 go: finding github.com/brocaar/lorawan v0.0.0-20190725071148-7d77cf375455
#12 0.325 go: finding github.com/twpayne/go-geom v1.0.6-0.20190712172859-6e5079ee5888
#12 1.187 go: finding gopkg.in/alecthomas/kingpin.v2 v2.2.6
#12 2.522 go: finding github.com/sirupsen/logrus v1.3.0
#12 2.524 go: finding github.com/stretchr/testify v1.3.0
#12 2.525 go: finding github.com/smartystreets/assertions v0.0.0-20190401211740-f487f9de1cd3
#12 2.526 go: finding github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a
#12 2.527 go: finding github.com/jacobsa/oglemock v0.0.0-20150831005832-e94d794d06ff
#12 2.528 go: finding github.com/jacobsa/crypto v0.0.0-20180924003735-d95898ceee07
#12 2.529 go: finding github.com/NickBall/go-aes-key-wrap v0.0.0-20170929221519-1c3aa3e4dfc5
#12 2.620 go: finding github.com/opencontainers/runc v0.1.1
#12 2.789 go: finding golang.org/x/net v0.0.0-20190328230028-74de082e2cca
#12 3.499 go: finding github.com/ory/dockertest v3.3.4+incompatible
#12 4.391 go: finding github.com/DATA-DOG/go-sqlmock v1.3.2
#12 4.636 go: finding github.com/opencontainers/go-digest v1.0.0-rc1
#12 4.738 go: finding github.com/d4l3k/messagediff v1.2.1
#12 4.919 go: finding github.com/opencontainers/image-spec v1.0.1
#12 5.108 go: finding golang.org/x/crypto v0.0.0-20180904163835-0709b304e793
#12 5.381 go: finding github.com/davecgh/go-spew v1.1.0
#12 6.047 go: finding github.com/lib/pq v1.0.0
#12 6.544 go: finding github.com/twpayne/go-kml v1.0.0
#12 6.596 go: finding github.com/jacobsa/ogletest v0.0.0-20170503003838-80d50a735a11
#12 6.774 go: finding github.com/docker/go-connections v0.4.0
#12 6.778 go: finding github.com/jacobsa/oglematchers v0.0.0-20150720000706-141901ea67cd
#12 7.481 go: finding github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5
#12 7.650 go: finding github.com/pmezard/go-difflib v1.0.0
#12 8.153 go: finding github.com/stretchr/objx v0.1.1
#12 8.449 go: finding golang.org/x/tools v0.0.0-20190328211700-ab21143f2384
#12 8.470 go: finding github.com/jacobsa/reqtrace v0.0.0-20150505043853-245c9e0234cb
#12 8.485 go: finding github.com/stretchr/testify v1.2.2
#12 8.614 go: finding github.com/jtolds/gls v4.20.0+incompatible
#12 8.906 go: finding github.com/twpayne/go-polyline v1.0.0
#12 8.909 go: finding github.com/gopherjs/gopherjs v0.0.0-20190328170749-bb2674552d8f
#12 8.988 go: finding golang.org/x/crypto v0.0.0-20190325154230-a5d413f7728c
#12 9.007 go: finding golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3
#12 9.034 go: finding github.com/davecgh/go-spew v1.1.1
#12 9.305 go: finding golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2
#12 9.523 go: finding golang.org/x/sys v0.0.0-20190402054613-e4093980e83e
#12 9.534 go: finding golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a
#12 10.02 go: finding github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1
#12 10.37 go: finding github.com/containerd/continuity v0.0.0-20181203112020-004b46473808
#12 10.38 go: finding github.com/sirupsen/logrus v1.4.1
#12 10.60 go: finding github.com/stretchr/objx v0.1.0
#12 10.60 go: finding github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d
#12 10.96 go: finding github.com/cenkalti/backoff v2.1.1+incompatible
#12 12.38 go: finding github.com/docker/go-units v0.3.3
#12 12.55 go: finding golang.org/x/text v0.3.0
#12 12.83 go: finding golang.org/x/sys v0.0.0-20190405154228-4b34438f7a67
#12 13.51 go: finding golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33
#12 13.52 go: finding golang.org/x/net v0.0.0-20190311183353-d8887717615a
#12 13.52 go: finding github.com/konsorten/go-windows-terminal-sequences v1.0.1
#12 18.22 go: downloading github.com/twpayne/go-geom v1.0.6-0.20190712172859-6e5079ee5888
#12 18.22 go: downloading github.com/brocaar/lorawan v0.0.0-20190725071148-7d77cf375455
#12 18.22 go: downloading github.com/pkg/errors v0.8.1
#12 18.25 go: downloading gopkg.in/alecthomas/kingpin.v2 v2.2.6
#12 18.30 go: extracting github.com/pkg/errors v0.8.1
#12 18.36 go: extracting gopkg.in/alecthomas/kingpin.v2 v2.2.6
#12 18.37 go: downloading github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4
#12 18.37 go: downloading github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
#12 18.39 go: extracting github.com/brocaar/lorawan v0.0.0-20190725071148-7d77cf375455
#12 18.39 go: extracting github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4
#12 18.40 go: downloading github.com/jacobsa/crypto v0.0.0-20180924003735-d95898ceee07
#12 18.42 go: extracting github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
#12 18.44 go: extracting github.com/twpayne/go-geom v1.0.6-0.20190712172859-6e5079ee5888
#12 18.89 go: extracting github.com/jacobsa/crypto v0.0.0-20180924003735-d95898ceee07
#12 DONE 22.0s

#13 [linux/amd64 stage-1 2/2] COPY --from=build main /usr/local/bin/
#13 DONE 0.1s

#14 exporting to image
#14 exporting layers
#14 exporting layers 0.9s done
#14 exporting manifest sha256:b1df6565ea0301148310cbcba589664316e6467da060d44ebc83035f23ee976c 0.0s done
#14 exporting config sha256:edf051c77aa488f30f30a7891394af6d3a3a0459f87562f397b10c54b8ad5b96 0.0s done
#14 exporting manifest list sha256:5e95279884f4819a5bea408ef9b577b056c7d4aba397024052a664c2ffa1ca03 0.0s done
#14 pushing layers
#14 pushing layers 8.0s done
#14 pushing manifest for docker.io/arribada/gateway
#14 pushing manifest for docker.io/arribada/gateway 1.0s done
#14 DONE 10.0s