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30 lines
729 B
Go
30 lines
729 B
Go
2 years ago
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package container
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import (
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"fmt"
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"os"
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"regexp"
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"github.com/containrrr/watchtower/pkg/types"
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)
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var dockerContainerPattern = regexp.MustCompile(`[0-9]+:.*:/docker/([a-f|0-9]{64})`)
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// GetRunningContainerID tries to resolve the current container ID from the current process cgroup information
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func GetRunningContainerID() (cid types.ContainerID, err error) {
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file, err := os.ReadFile(fmt.Sprintf("/proc/%d/cgroup", os.Getpid()))
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if err != nil {
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return
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}
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return getRunningContainerIDFromString(string(file)), nil
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}
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func getRunningContainerIDFromString(s string) types.ContainerID {
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matches := dockerContainerPattern.FindStringSubmatch(s)
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if len(matches) < 2 {
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return ""
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}
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return types.ContainerID(matches[1])
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}
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