Failure of git ls-remote --tags --heads ssh://git@bitbucket.org/...

Step 1/21 : FROM node:10-alpine as intermediate
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Step 2/21 : ARG SSH_PRIVATE_KEY
 ---> Using cache
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Step 3/21 : ARG NODE_ENV
 ---> Using cache
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Step 4/21 : ENV NODE_ENV ${NODE_ENV}
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Removing intermediate container 730280973d79
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Step 5/21 : RUN mkdir /root/.ssh/
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Removing intermediate container b30715572202
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Step 6/21 : RUN echo "${SSH_PRIVATE_KEY}" > /root/.ssh/id_rsa
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Removing intermediate container b0c274c0ce71
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Step 7/21 : RUN chmod 400 /root/.ssh/id_rsa
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Removing intermediate container ab9315a22f75
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Step 8/21 : RUN touch /root/.ssh/known_hosts
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Removing intermediate container d11d7a8adf55
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Step 9/21 : RUN apk add --no-cache openssh-client git
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fetch http://dl-cdn.alpinelinux.org/alpine/v3.8/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.8/community/x86_64/APKINDEX.tar.gz
(1/9) Installing ca-certificates (20171114-r3)
(2/9) Installing nghttp2-libs (1.32.0-r0)
(3/9) Installing libssh2 (1.8.2-r0)
(4/9) Installing libcurl (7.61.1-r2)
(5/9) Installing expat (2.2.5-r0)
(6/9) Installing pcre2 (10.31-r0)
(7/9) Installing git (2.18.1-r0)
(8/9) Installing openssh-keygen (7.7_p1-r4)
(9/9) Installing openssh-client (7.7_p1-r4)
Executing busybox-1.28.4-r1.trigger
Executing ca-certificates-20171114-r3.trigger
OK: 24 MiB in 24 packages
Removing intermediate container 0023b515d0fa
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Step 10/21 : RUN ssh-keyscan bitbucket.org >> /root/.ssh/known_hosts
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# bitbucket.org:22 SSH-2.0-conker_1.1.59-75ba71f app-153
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Step 11/21 : WORKDIR /usr/src/app
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Step 12/21 : COPY package.json yarn.lock ./
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Step 13/21 : RUN yarn install
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yarn install v1.10.1
[1/4] Resolving packages...
[2/4] Fetching packages...
error Command failed.
Exit code: 128
Command: git
Arguments: ls-remote --tags --heads ssh://git@bitbucket.org/alteadigital/aon-mycare-microservice.git
Directory: /usr/src/app
Output:
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
The command '/bin/sh -c yarn install' returned a non-zero code: 1
[Pipeline] }
[Pipeline] // withDockerRegistry
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // container
[Pipeline] }
[Pipeline] // node
[Pipeline] }
[Pipeline] // podTemplate
[Pipeline] End of Pipeline