Reduce builds

Author: aservedio

hooks/common

@@ -6,26 +6,25 @@ IS_MASTER_BUILD=$([ "$SOURCE_BRANCH" == "master" ] && echo 1 || echo 0)
 # return list of "<fromTag>|<targetTag>" depending if we are building against master or a specific release
 getBuildParams() {
   local RELEASE=$(echo $SOURCE_BRANCH | cut -c2-)
-  # get top 5 x.y, then for each get top 3 x.y.z.
   local TAGS=""
 
   if [ $IS_MASTER_BUILD -eq 1 ]; then
-    TAGS=$(curl 'https://registry.hub.docker.com/v2/repositories/library/nginx/tags?page_size=1024&name=alpine' 2>/dev/null | grep -Po '"name":"([0-9]+\.[0-9]+-alpine)"' | cut -d'"' -f4 | sort -r | uniq | head -n5)
+    TAGS=$(curl 'https://registry.hub.docker.com/v2/repositories/library/nginx/tags?page_size=1024&name=alpine' 2>/dev/null | grep -Po '"name":"([0-9]+\.[0-9]+-alpine)"' | cut -d'"' -f4 | sort -r | uniq | head -n3)
     for MTAG in $(echo "$TAGS" | grep "master"); do
       strippedTag=$(echo "${MTAG}" | cut -d'-' -f1)
       echo "${MTAG}|${strippedTag}-master"
     done
   else
-    TAGS=$(curl 'https://registry.hub.docker.com/v2/repositories/library/nginx/tags?page_size=1024&name=alpine' 2>/dev/null | grep -Po '"name":"([0-9]+\.[0-9]+-alpine)"' | cut -d'"' -f4 | cut -d'-' -f1 | sort -r | uniq | head -n5 | while read minor; do curl 'https://registry.hub.docker.com/v2/repositories/library/nginx/tags?page_size=1024&name=alpine' 2>/dev/null | grep -Po "\"name\":\"(${minor}\.[0-9]+-alpine)\"" | cut -d'"' -f4 | sort -r | uniq | head -n3; done)
+    TAGS=$(curl 'https://registry.hub.docker.com/v2/repositories/library/nginx/tags?page_size=1024&name=alpine' 2>/dev/null | grep -Po '"name":"([0-9]+\.[0-9]+-alpine)"' | cut -d'"' -f4 | cut -d'-' -f1 | sort -r | uniq | head -n3 | while read minor; do curl 'https://registry.hub.docker.com/v2/repositories/library/nginx/tags?page_size=1024&name=alpine' 2>/dev/null | grep -Po "\"name\":\"(${minor}\.[0-9]+-alpine)\"" | cut -d'"' -f4 | sort -r | uniq | head -n3; done)
     for MTAG in $(echo "$TAGS" | grep -v "master"); do
       strippedTag=$(echo "${MTAG}" | cut -d'-' -f1)
-      echo "${MTAG}|${strippedTag}-${RELEASE}"
+      echo "${MTAG}|${strippedTag}-v${RELEASE}"
     done
 
-    TAGS=$(curl 'https://registry.hub.docker.com/v2/repositories/library/nginx/tags?page_size=1024&name=alpine' 2>/dev/null | grep -Po '"name":"([0-9]+\.[0-9]+-alpine)"' | cut -d'"' -f4 | sort -r | uniq | head -n5)
+    TAGS=$(curl 'https://registry.hub.docker.com/v2/repositories/library/nginx/tags?page_size=1024&name=alpine' 2>/dev/null | grep -Po '"name":"([0-9]+\.[0-9]+-alpine)"' | cut -d'"' -f4 | sort -r | uniq | head -n3)
     for MTAG in $(echo "$TAGS" | grep -v "master"); do
       strippedTag=$(echo "${MTAG}" | cut -d'-' -f1)
-      echo "${MTAG}|${strippedTag}-${RELEASE}"
+      echo "${MTAG}|${strippedTag}-v${RELEASE}"
     done
   fi
 }