upload.sh

#!/bin/bash

# Author 5stars217 https://5stars217.github.io/
#!/bin/bash

# Global Variables
MANIFEST="./Manifest.json"
DOCKER_HOST=$1
REPOSITORY=$2
LAYERPATH=$3
CONFIGPATH=$4

SIZE=
DIGEST=
LOCATION=
CONFIGSIZE=
CONFIGDIGEST=
LAYERSIZE=
LAYERDIGEST=

# Functions
function startUpload(){
    LOCATION=$(curl -X POST -siL -v -H "Connection: close" $DOCKER_HOST/v2/$REPOSITORY/blobs/uploads | grep Location | sed '2q;d' | cut -d: -f2- | tr -d ' ' | tr -d '\r')
}

function uploadLayer(){
    layersize=$(stat -c%s "$1")
    LOCATION=$(curl -X PATCH -v -H "Content-Type: application/octet-stream" \
    -H "Content-Length: $layersize" -H "Connection: close" --data-binary @"$1" \
    $LOCATION 2>&1 | grep 'Location' | cut -d: -f2- | tr -d ' ' | tr -d '\r')
    SIZE=$layersize
}

function finalizeLayer(){
    DIGEST=$(curl -X PUT -v -H "Content-Length: 0" -H "Connection: close" $LOCATION?digest=sha256:$(sha256sum $1 | cut -d ' ' -f1) | grep Docker-Content-Digest | awk '{print $2}' | tr -d '\r')
}

function pushManifest(){
    ((size=$(stat -c%s "$MANIFEST")-1))
    curl -X PUT -vvv -H "Content-Type: application/vnd.docker.distribution.manifest.v2+json" \
    -H "Content-Length: $size" -H "Connection: close" \
    -d "$(cat "$MANIFEST")" $DOCKER_HOST/v2/$REPOSITORY/manifests/3.15.4
}

# Check Parameters
if [ $# -lt 4 ]
then
    echo "Error: No arguments supplied."
    echo "Usage: upload.sh <DOCKER_HOST> <REPOSITORY> <LAYER> <CONFIG>"
    exit 1
fi

# Upload Layer
startUpload
uploadLayer $LAYERPATH
LAYERSIZE=$SIZE
finalizeLayer $LAYERPATH
LAYERDIGEST=$DIGEST

# Upload Config
startUpload
uploadLayer $CONFIGPATH
CONFIGSIZE=$SIZE
finalizeLayer $CONFIGPATH
CONFIGDIGEST=$DIGEST

cat > $MANIFEST << EOF
{
  "schemaVersion": 2,
  "mediaType": "application/vnd.docker.distribution.manifest.v2+json",
  "config": {
    "mediaType": "application/vnd.docker.container.image.v1+json",
    "size": $CONFIGSIZE,
    "digest": "$CONFIGDIGEST"
  },
  "layers": [
    {
      "mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
      "size": $LAYERSIZE,
      "digest": "$LAYERDIGEST"
    }
  ]
}
EOF

pushManifest