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support setting owner user ID / group ID #19

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merged 1 commit into from
Jul 9, 2024
Merged

support setting owner user ID / group ID #19

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20 changes: 12 additions & 8 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -22,21 +22,25 @@ Alternatively, you can also build from source by cloning the repo and running `g

```shell
-ca-certs-file string
The path to the local CA certificates file
The path to the local CA certificates file
-ca-certs-image-url string
The URL of an image to extract the CA certificates from
The URL of an image to extract the CA certificates from
-dest-image-url string
The URL of the image to push the modified image to
The URL of the image to push the modified image to
-image-cert-path string
The path to the certificate file in the image (optional) (default "/etc/ssl/certs/ca-certificates.crt")
The path to the certificate file in the image (optional) (default "/etc/ssl/certs/ca-certificates.crt")
-image-url string
The URL of the image to append the CA certificates to
The URL of the image to append the CA certificates to
-output-certs-path string
Output the (appended) certificates file from the image to a local file (optional)
Output the (appended) certificates file from the image to a local file (optional)
-owner-group-id int
The group ID of the owner of the certificate file in the image (optional)
-owner-user-id int
The user ID of the owner of the certificate file in the image (optional)
-platform string
The platform to build for (default linux/amd64) (default "linux/amd64")
The platform to build the image for (default "linux/amd64")
-replace-certs
Replace the certificates in the certificate file instead of appending them
Replace the certificates in the certificate file instead of appending them
```

## Example
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6 changes: 6 additions & 0 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,8 @@ var (
imageCertPath string
outputCerts string
replaceCerts bool
ownerUserID int
ownerGroupID int
)

func init() {
Expand All @@ -38,6 +40,8 @@ func init() {
flag.StringVar(&platformStr, "platform", "linux/amd64", "The platform to build the image for")

flag.StringVar(&imageCertPath, "image-cert-path", "/etc/ssl/certs/ca-certificates.crt", "The path to the certificate file in the image (optional)")
flag.IntVar(&ownerUserID, "owner-user-id", 0, "The user ID of the owner of the certificate file in the image (optional)")
flag.IntVar(&ownerGroupID, "owner-group-id", 0, "The group ID of the owner of the certificate file in the image (optional)")
flag.StringVar(&outputCerts, "output-certs-path", "", "Output the (appended) certificates file from the image to a local file (optional)")
flag.BoolVar(&replaceCerts, "replace-certs", false, "Replace the certificates in the certificate file instead of appending them")
}
Expand Down Expand Up @@ -186,6 +190,8 @@ func newImage(old v1.Image, caCertBytes []byte) (v1.Image, error) {
Name: imageCertPath,
Mode: 0644,
Size: int64(len(newCaCertBytes)),
Uid: ownerUserID,
Gid: ownerGroupID,
})
if _, err := newTar.Write(newCaCertBytes); err != nil {
return nil, err
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