我们正在Docker Cloud上构建Docker容器。构建过程需要git子模块。
要初始化本地构建的子模块,我们在Dockerfile中添加了以下行:
RUN git submodule update --init --recursive
请参阅: https://github.com/open62541/open62541/blob/master/Dockerfile#L9
对应的提交:
https://github.com/open62541/open62541/commit/ee9c18a6a05722edfe7c0d8d8e140d802fa2e5f2
和拉取请求:
https://github.com/open62541/open62541/pull/3191
注意: 与类似的问题相反,所有子模块都是github上的公共存储库,无需身份验证。
没有子模块初始化行的情况:
- 在Docker Cloud上构建:成功
https://cloud.docker.com/u/open62541/repository/registry-1.docker.io/open62541/open62541/builds/dcd3283c-76af-4f6b-bb00-cecbaaffc82f - 本地构建:失败
git clone https://github.com/open62541/open62541.git
cd open62541
# Parent commit without git submodule update
git checkout e97abd591a159ce894488d93796b858d9f0d00b9
# This will fail because the submodules are obviously not initialized
docker build .
错误:
CMake Error at CMakeLists.txt:830 (message):
File /opt/open62541/deps/ua-nodeset/Schema/Opc.Ua.NodeSet2.xml not found.
You probably need to initialize the git submodule for deps/ua-nodeset.
Dockerfile中带有子模块init的情况:
- 在Docker Cloud上构建:失败
https://cloud.docker.com/u/open62541/repository/registry-1.docker.io/open62541/open62541/builds/28663705-c324-4c7f-a084-f94eb80057bc
Step 7/18 : RUN git submodule update --init --recursive
---> Running in b358c21c4d53
fatal: not a git repository: /src/b6tohshrfzzntavvhek3zna/.git/modules/deps/mdnsd
Unable to find current revision in submodule path 'deps/mdnsd'
- 本地构建:成功
git clone https://github.com/open62541/open62541.git
cd open62541
# Commit which added git submodule init in Dockerfile
git checkout ee9c18a6a05722edfe7c0d8d8e140d802fa2e5f2
# This will succeed
docker build .
如何正确初始化dockerfile中的子模块,使其在Docker云上正常工作,同时可以拉出主存储库并构建docker容器?
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