Pipeline execution failed when using a docker agent due to missing ca.pem file.
Jenkins setup:
Jenkins: 2.426.3
OS: Linux - 5.15.133.1-microsoft-standard-WSL2
Java: 17.0.9 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
Plugins
ant:497.v94e7d9fffa_b_9
antisamy-markup-formatter:162.v0e6ec0fcfcf6
apache-httpcomponents-client-4-api:4.5.14-208.v438351942757
authentication-tokens:1.53.v1c90fd9191a_b_
blueocean:1.27.10
blueocean-bitbucket-pipeline:1.27.10
blueocean-commons:1.27.10
blueocean-config:1.27.10
blueocean-core-js:1.27.10
blueocean-dashboard:1.27.10
blueocean-display-url:2.4.2
blueocean-events:1.27.10
blueocean-git-pipeline:1.27.10
blueocean-github-pipeline:1.27.10
blueocean-i18n:1.27.10
blueocean-jwt:1.27.10
blueocean-personalization:1.27.10
blueocean-pipeline-api-impl:1.27.10
blueocean-pipeline-editor:1.27.10
blueocean-pipeline-scm-api:1.27.10
blueocean-rest:1.27.10
blueocean-rest-impl:1.27.10
blueocean-web:1.27.10
bootstrap5-api:5.3.2-3
bouncycastle-api:2.30.1.77-225.v26ea_c9455fd9
branch-api:2.1144.v1425d1c3d5a_7
build-timeout:1.32
caffeine-api:3.1.8-133.v17b_1ff2e0599
checks-api:2.0.2
cloudbees-bitbucket-branch-source:866.vdea_7dcd3008e
cloudbees-folder:6.858.v898218f3609d
commons-lang3-api:3.13.0-62.v7d18e55f51e2
commons-text-api:1.11.0-95.v22a_d30ee5d36
credentials:1319.v7eb_51b_3a_c97b_
credentials-binding:657.v2b_19db_7d6e6d
display-url-api:2.200.vb_9327d658781
docker-commons:439.va_3cb_0a_6a_fb_29
docker-workflow:572.v950f58993843
durable-task:547.vd1ea_007d100c
echarts-api:5.4.3-2
email-ext:2.104
favorite:2.208.v91d65b_7792a_c
font-awesome-api:6.5.1-2
git:5.2.1
git-client:4.6.0
github:1.38.0
github-api:1.318-461.v7a_c09c9fa_d63
github-branch-source:1772.va_69eda_d018d4
gradle:2.9
gson-api:2.10.1-15.v0d99f670e0a_7
handy-uri-templates-2-api:2.1.8-30.v7e777411b_148
htmlpublisher:1.32
instance-identity:185.v303dc7c645f9
ionicons-api:56.v1b_1c8c49374e
jackson2-api:2.16.1-373.ve709c6871598
jakarta-activation-api:2.0.1-3
jakarta-mail-api:2.0.1-3
javax-activation-api:1.2.0-6
javax-mail-api:1.6.2-9
jaxb:2.3.9-1
jenkins-design-language:1.27.10
jjwt-api:0.11.5-77.v646c772fddb_0
joda-time-api:2.12.6-21.vca_fd74418fb_7
jquery3-api:3.7.1-1
json-path-api:2.9.0-33.v2527142f2e1d
junit:1259.v65ffcef24a_88
ldap:711.vb_d1a_491714dc
mailer:463.vedf8358e006b_
matrix-auth:3.2.1
matrix-project:822.824.v14451b_c0fd42
mina-sshd-api-common:2.12.0-90.v9f7fb_9fa_3d3b_
mina-sshd-api-core:2.12.0-90.v9f7fb_9fa_3d3b_
okhttp-api:4.11.0-172.vda_da_1feeb_c6e
pam-auth:1.10
pipeline-build-step:540.vb_e8849e1a_b_d8
pipeline-github-lib:42.v0739460cda_c4
pipeline-graph-analysis:202.va_d268e64deb_3
pipeline-groovy-lib:704.vc58b_8890a_384
pipeline-input-step:477.v339683a_8d55e
pipeline-milestone-step:111.v449306f708b_7
pipeline-model-api:2.2175.v76a_fff0a_2618
pipeline-model-definition:2.2175.v76a_fff0a_2618
pipeline-model-extensions:2.2175.v76a_fff0a_2618
pipeline-rest-api:2.34
pipeline-stage-step:305.ve96d0205c1c6
pipeline-stage-tags-metadata:2.2175.v76a_fff0a_2618
pipeline-stage-view:2.34
plain-credentials:143.v1b_df8b_d3b_e48
plugin-util-api:3.8.0
pubsub-light:1.18
resource-disposer:0.23
scm-api:683.vb_16722fb_b_80b_
script-security:1321.va_73c0795b_923
snakeyaml-api:2.2-111.vc6598e30cc65
sse-gateway:1.26
ssh-credentials:308.ve4497b_ccd8f4
ssh-slaves:2.948.vb_8050d697fec
structs:337.v1b_04ea_4df7c8
timestamper:1.26
token-macro:400.v35420b_922dcb_
trilead-api:2.133.vfb_8a_7b_9c5dd1
variant:60.v7290fc0eb_b_cd
workflow-aggregator:596.v8c21c963d92d
workflow-api:1291.v51fd2a_625da_7
workflow-basic-steps:1042.ve7b_140c4a_e0c
workflow-cps:3853.vb_a_490d892963
workflow-durable-task-step:1327.ve57634fb_09ce
workflow-job:1385.vb_58b_86ea_fff1
workflow-multibranch:773.vc4fe1378f1d5
workflow-scm-step:415.v434365564324
workflow-step-api:657.v03b_e8115821b_
workflow-support:865.v43e78cc44e0d
ws-cleanup:0.45
I started jenkins service using this docker compose file:
docker-compose.yaml
version: "3"
services:
jenkins-blueocean:
image: myjenkins-blueocean:1
container_name: jenkins-blueocean
restart: on-failure
networks:
- jenkins
environment:
- DOCKER_HOST=tcp://docker:2376
- DOCKER_CERT_PATH=/certs/client
- DOCKER_TLS_VERIFY=1
volumes:
- jenkins-data:/var/jenkins_home
- jenkins-docker-certs:/certs/client:ro
ports:
- "8080:8080"
- "50000:50000"
networks:
jenkins:
volumes:
jenkins-data:
jenkins-docker-certs:
I am trying to execute a pipeline using a docker agent like so:
Jenkinsfile
pipeline {
agent {
docker {
image 'node:20-alpine'
args '-p 3000:3000'
}
}
stages {
stage('Build') {
steps {
echo 'Building...'
}
}
}
}
The problem arises as soon as it executes this line:
+ docker inspect -f . node:20-alpine
Which causes the following error:
Failed to initialize: unable to resolve docker endpoint: open /certs/client/ca.pem: no such file or directory
Where do I find this ca.pem file and how do I configure Jenkins to use it?