refactor(build): trim leading v from travis tag

Updating the push script with the new release
conventions.

The GitHub release tags will have a leading v. Example v1.10.0

The docker images will be tagged by trimming the leading v. Example 1.10.0

Also, the travis can setup some custom suffix for the tags, like dev or debug.

Signed-off-by: kmova <[email protected]>

Author: kmova

buildscripts/push

@@ -1,4 +1,19 @@
 #!/bin/bash
+
+# Copyright 2020 The OpenEBS Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 set -e
 
 if [ -z ${DIMAGE} ];
@@ -42,7 +57,10 @@ function TagAndPushImage() {
   REPO="$1"
   TAG="$2"
 
-  IMAGE_URI="${REPO}:${TAG}";
+  #Add an option to specify a custom TAG_SUFFIX 
+  #via environment variable. Default is no tag.
+  #Example suffix could be "-debug" of "-dev"
+  IMAGE_URI="${REPO}:${TAG}${TAG_SUFFIX}";
   sudo docker tag ${IMAGEID} ${IMAGE_URI};
   echo " push ${IMAGE_URI}";
   sudo docker push ${IMAGE_URI};
@@ -65,7 +83,11 @@ then
     # Push with different tags if tagged as a release
     # When github is tagged with a release, then Travis will
     # set the release tag in env TRAVIS_TAG
-    TagAndPushImage "${DIMAGE}" "${TRAVIS_TAG}"
+    # Trim the `v` from the TRAVIS_TAG if it exists
+    # Example: v1.10.0 maps to 1.10.0
+    # Example: 1.10.0 maps to 1.10.0
+    # Example: v1.10.0-custom maps to 1.10.0-custom
+    TagAndPushImage "${DIMAGE}" "${TRAVIS_TAG#v}"
     TagAndPushImage "${DIMAGE}" "latest"
   fi;
 else
@@ -85,7 +107,8 @@ then
     # Push with different tags if tagged as a release
     # When github is tagged with a release, then Travis will
     # set the release tag in env TRAVIS_TAG
-    TagAndPushImage "quay.io/${DIMAGE}" "${TRAVIS_TAG}"
+    # Trim the `v` from the TRAVIS_TAG if it exists
+    TagAndPushImage "quay.io/${DIMAGE}" "${TRAVIS_TAG#v}"
     TagAndPushImage "quay.io/${DIMAGE}" "latest"
   fi;
 else