init repo

README.tpl

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+Google Container Registry Mirror [last sync ${current_date} UTC]
+-------
+
+[![Sync Status](https://travis-ci.org/anjia0532/gcr.io_mirror.svg?branch=sync)](https://travis-ci.org/anjia0532/gcr.io_mirror)
+
+Syntax
+-------
+
+```bash
+gcr.io/namespace/image_name:image_tag 
+#eq
+${user_name}/namespace.image_name:image_tag
+```
+
+Example
+-------
+
+```bash
+docker pull gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1 
+# eq 
+docker pull ${user_name}/google-containers.federation-controller-manager-arm64:v1.3.1-beta.1
+```
+
+ReTag ${user_name} images to gcr.io 
+-------
+
+```bash
+# replace gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1 to real image
+# this will convert gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1 
+# to ${user_name}/google-containers.federation-controller-manager-arm64:v1.3.1-beta.1 and pull it
+
+images=$(cat img.txt)
+#or 
+#images=$(cat <<EOF
+# gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1
+# gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1
+# gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1
+#EOF)
+
+eval $(echo ${images}|
+        sed 's/gcr\.io/${user_name}/g;s/\//\./g;s/ /\n/g;s/${user_name}\./${user_name}\//g' |
+        uniq |
+        awk '{print "docker pull "$1";"}'
+       )
+
+# this code will retag all of ${user_name}'s image from local  e.g. ${user_name}/google-containers.federation-controller-manager-arm64:v1.3.1-beta.1 
+# to gcr.io/google-containers/federation-controller-manager-arm64:v1.3.1-beta.1
+
+for img in $(docker images --format "{{.Repository}}:{{.Tag}}"| grep "${user_name}"); do
+  n=$(echo ${img}| awk -F'[/.:]' '{printf "gcr.io/%s/%s",$2,$3}')
+  tag=$(echo ${img}| awk -F'[:]' '{printf ":%s",$2}')
+  docker tag $img "${n}${tag}"
+done
+```
+
+[Changelog](./CHANGES.md)
+-------
+