Add a default content key for the service_kafka plugin

[silentmoooon]

#1748

[silentmoooon]

这个action怎么老是报错

ERROR: failed to solve: failed to resolve source metadata for sls-opensource-registry.cn-shanghai.cr.aliyuncs.com/common/dockerfile:1.5: failed to authorize: failed to fetch anonymous token: Get "https://dockerauth.cn-shanghai.aliyuncs.com/auth?scope=repository%3Acommon%2Fdockerfile%3Apull&service=registry.aliyuncs.com%3Acn-shanghai%3Achina%3Acri-f3jqinwsz7s1xlep": net/http: TLS handshake timeout

[yyuuttaaoo]

这个action怎么老是报错

ERROR: failed to solve: failed to resolve source metadata for sls-opensource-registry.cn-shanghai.cr.aliyuncs.com/common/dockerfile:1.5: failed to authorize: failed to fetch anonymous token: Get "https://dockerauth.cn-shanghai.aliyuncs.com/auth?scope=repository%3Acommon%2Fdockerfile%3Apull&service=registry.aliyuncs.com%3Acn-shanghai%3Achina%3Acri-f3jqinwsz7s1xlep": net/http: TLS handshake timeout

为了国内开发方便替换了dockerfile:1.5的镜像地址，但这样git action就不太稳定，容易TLS握手超时