Building workload fails with error resolving dockerfile path: please provide a valid path to a Dockerfile within the build context with --dockerfile
Article ID: 406518
Updated On:
Products
Issue/Introduction
Attempting to build workload fails with error:
error resolving dockerfile path: please provide a valid path to a Dockerfile within the build context with --dockerfile
The dockerfile path is configured in template as follows:
- name: dockerfile
value: ./Dockerfile
Developer is following this guide for Use Dockerfile-based builds with Supply Chain Choreographer: https://techdocs.broadcom.com/us/en/vmware-tanzu/standalone-components/tanzu-application-platform/1-12/tap/scc-dockerfile-based-builds.html
Environment
Tanzu Application Platform
Cause
Maven can change the directory path to dockerfile during compilation.
Resolution
We must check the dockerbuild path directly in the JAR file downloaded from maven.
Validate the Maven resource in the build log. It should look like:
build 30-Jul-2025 14:10:19 34 + | value: https://artifactory.<sample maven>/artifactory/cf-mvn-development-local
build 30-Jul-2025 14:10:19 35 + | - name: maven
build 30-Jul-2025 14:10:19 36 + | value:
build 30-Jul-2025 14:10:19 37 + | artifactId: example-java-app
build 30-Jul-2025 14:10:19 38 + | groupId: com.example.group
build 30-Jul-2025 14:10:19 39 + | type: jar
build 30-Jul-2025 14:10:19 40 + | version: 1.0.0-feature-docker-build
Download the JAR file from the maven and inspect the contents. This can be done by commands.
jar tf example-java-app.jar | grep -i dockerfile
or
unzip -l example-java-app.jar| grep -i dockerfile
Make sure that the dockerfile value points to the correct relative path.
- name: dockerfile
value: ./Dockerfile
In one example, the Dockerfile path changed from ./main/src/Dockerfile to ./BOOT-INF/classes/Dockerfile after getting compiled by maven.
Once the dockerfile path is corrected then retry the build of workload.
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