Default to GHCR instead of DockerHub for install

DockerHub has imposed more restrictive image pull limits and costs for
business users. GitHub Container Registry (GHCR) remains freely
accessible.

This change updates the Fabric install script to use GHCR to pull Docker
images, where those image versions are available. For image versions not
available on GHCR, fall back to DockerHub.

Signed-off-by: Mark S. Lewis <[email protected]>

Author: bestbeforetoday

scripts/install-fabric.sh

@@ -24,15 +24,16 @@ _arg_comp=('' )
 _arg_fabric_version="2.5.11"
 _arg_ca_version="1.5.15"
 
-REGISTRY=${FABRIC_DOCKER_REGISTRY:-docker.io/hyperledger}
-
 OS=$(uname -s|tr '[:upper:]' '[:lower:]'|sed 's/mingw64_nt.*/windows/')
 ARCH=$(uname -m | sed 's/x86_64/amd64/g' | sed 's/aarch64/arm64/g')
 PLATFORM=${OS}-${ARCH}
 
 # Fabric < 1.2 uses uname -m for architecture.
 MARCH=$(uname -m)
 
+HYPERLEDGER_NAMESPACE=hyperledger
+DOCKER_NAMESPACE="${FABRIC_DOCKER_REGISTRY:-${HYPERLEDGER_NAMESPACE}}"
+
 
 die()
 {
@@ -142,21 +143,77 @@ assign_positional_args()
 
 singleImagePull() {
     #three_digit_image_tag is passed in, e.g. "1.4.7"
-    three_digit_image_tag=$1
+    local three_digit_image_tag=$1
     shift
     #two_digit_image_tag is derived, e.g. "1.4", especially useful as a local tag for two digit references
+    local two_digit_image_tag
     two_digit_image_tag=$(echo "$three_digit_image_tag" | cut -d'.' -f1,2)
-    while [[ $# -gt 0 ]]
-    do
-        image_name="$1"
-        echo "====>  ${REGISTRY}/fabric-$image_name:$three_digit_image_tag"
-        ${CONTAINER_CLI} pull "${REGISTRY}/fabric-$image_name:$three_digit_image_tag"
-        ${CONTAINER_CLI} tag "${REGISTRY}/fabric-$image_name:$three_digit_image_tag" "${REGISTRY}/fabric-$image_name"
-        ${CONTAINER_CLI} tag "${REGISTRY}/fabric-$image_name:$three_digit_image_tag" "${REGISTRY}/fabric-$image_name:$two_digit_image_tag"
+
+
+    while [[ $# -gt 0 ]]; do
+        local component_name="$1"
+        local registry
+        registry="$(dockerComponentRegistry "${component_name}" "${three_digit_image_tag}")"
+        local image_name="${registry}/fabric-${component_name}:${three_digit_image_tag}"
+
+        echo "====>  ${image_name}"
+        ${CONTAINER_CLI} pull "${image_name}"
+
+
+        ${CONTAINER_CLI} tag "${image_name}" "${DOCKER_NAMESPACE}/fabric-${component_name}"
+        ${CONTAINER_CLI} tag "${image_name}" "${DOCKER_NAMESPACE}/fabric-${component_name}:${two_digit_image_tag}"
+        # Re-tag 3-digit version to ensure there is a tag without registry prefix
+        ${CONTAINER_CLI} tag "${image_name}" "${DOCKER_NAMESPACE}/fabric-${component_name}:${three_digit_image_tag}"
+
         shift
     done
 }
 
+dockerComponentRegistry() {
+    if [[ -n ${FABRIC_DOCKER_REGISTRY} ]]; then
+        echo -n "${FABRIC_DOCKER_REGISTRY}"
+        return
+    fi
+
+    local component="$1"
+    local image_version="$2"
+
+    case "${component}" in
+        ca)
+            echo -n "$(dockerCARegistry "${image_version}")/${HYPERLEDGER_NAMESPACE}"
+            ;;
+        *)
+            echo -n "$(dockerFabricRegistry "${image_version}")/${HYPERLEDGER_NAMESPACE}"
+            ;;
+    esac
+}
+
+dockerCARegistry() {
+    local version="$1"
+
+    case "${version}" in
+        1.[0-4].*|1.5.[0-9]|1.5.1[0-4])
+            echo -n 'docker.io'
+            ;;
+        *)
+            echo -n 'ghcr.io'
+            ;;
+    esac
+}
+
+dockerFabricRegistry() {
+    local version="$1"
+
+    case "${version}" in
+        1.*|2.[0-4].*|2.5.[0-9]|2.5.10|3.0.0)
+            echo -n 'docker.io'
+            ;;
+        *)
+            echo -n 'ghcr.io'
+            ;;
+    esac
+}
+
 cloneSamplesRepo() {
     # clone (if needed) hyperledger/fabric-samples and checkout corresponding
     # version to the binaries and docker images to be downloaded