fix(Alpine,rhel): reinstate alpine and rhel Dockerfiles

While backporting
d940acc
we inadvertedly stopped supporting Alpine (which is still maintained in
2.8, but not on 3.x) and rhel. This commit reinstates them.

However, the ARM builds are no longer available for Alpine or Rhel (see https://cloudsmith.io/~kong/repos/gateway-28/packages/) so those were removed from the Dockerfiles

Dockerfile.apk

@@ -4,7 +4,6 @@ ARG KONG_VERSION=2.8.4
 ENV KONG_VERSION $KONG_VERSION
 
 ARG KONG_AMD64_SHA="930b3b933b6c3f0393700433a919745900485d19e0cd8aba2d70aa066ccd10d2"
-ARG KONG_ARM64_SHA="9027da2a4df477b462f34da9450412012ffdc0f9019e33ed7ff8e88f3df062c6"
 
 ARG KONG_PREFIX=/usr/local/kong
 ENV KONG_PREFIX $KONG_PREFIX

alpine/Dockerfile

@@ -14,19 +14,15 @@ ARG KONG_VERSION=2.8.4
 ENV KONG_VERSION $KONG_VERSION
 
 ARG KONG_AMD64_SHA="930b3b933b6c3f0393700433a919745900485d19e0cd8aba2d70aa066ccd10d2"
-ARG KONG_ARM64_SHA="9027da2a4df477b462f34da9450412012ffdc0f9019e33ed7ff8e88f3df062c6"
 
 # hadolint ignore=DL3018
 RUN set -eux; \
     arch="$(apk --print-arch)"; \
     major_minor="$(echo "${KONG_VERSION%.*}" | tr -d '.')"; \
-    case "${arch}" in \
-      x86_64) KONG_SHA256=$KONG_AMD64_SHA ;; \
-      aarch64) KONG_SHA256=$KONG_ARM64_SHA ;; \
-    esac; \
+    KONG_SHA256=$KONG_AMD64_SHA ;; \
     if [ "$ASSET" = "ce" ] ; then \
       apk add --no-cache --virtual .build-deps curl wget tar ca-certificates \
-      && curl -fL "https://packages.konghq.com/public/gateway-${major_minor}/raw/names/kong-${arch}/versions/${KONG_VERSION}/kong-${KONG_VERSION}.${arch}.apk.tar.gz" -o /tmp/kong.tar.gz \
+      && curl -fL "https://packages.konghq.com/public/gateway-${major_minor}/alpine/any-version/main/x86_64/kong-${KONG_VERSION}.apk" \
       && echo "$KONG_SHA256  /tmp/kong.tar.gz" | sha256sum -c - \
       && apk del .build-deps; \
     else \

rhel/Dockerfile

@@ -30,10 +30,9 @@ ARG RHEL_VERSION
 ENV RHEL_VERSION $RHEL_VERSION
 
 RUN set -ex; \
-    arch='x86_64'; \
     major_minor="$(echo "${KONG_VERSION%.*}" | tr -d '.')"; \
     if [ "$ASSET" = "ce" ] ; then \
-      curl -fL "https://packages.konghq.com/public/gateway-${major_minor}/rpm/el/${RHEL_VERSION}/${arch}/kong-${KONG_VERSION}.el${RHEL_VERSION}.${arch}.rpm" -o /tmp/kong.rpm \
+      curl -fL "https://packages.konghq.com/public/gateway-${major_minor}/rpm/el/${RHEL_VERSION}/x86_64/kong-${KONG_VERSION}.el${RHEL_VERSION}.x86_64.rpm" -o /tmp/kong.rpm \
       && echo "$KONG_SHA256  /tmp/kong.rpm" | sha256sum -c -; \
     else \
       yum update -y \

update.sh

@@ -52,6 +52,26 @@ if [[ -n "$kbt_in_kong_v" ]]; then
   sed -i.bak 's/KONG_BUILD_TOOLS?=.*/KONG_BUILD_TOOLS?='$kbt_in_kong_v'/g' Makefile
 fi
 
+pushd alpine
+   url=$(get_url Dockerfile amd64)
+   echo $url
+   curl -fL $url -o /tmp/kong
+   new_sha=$(sha256sum /tmp/kong | cut -b1-64)
+
+   sed -i.bak 's/ARG KONG_AMD64_SHA=.*/ARG KONG_AMD64_SHA=\"'$new_sha'\"/g' Dockerfile
+   sed -i.bak 's/ARG KONG_VERSION=.*/ARG KONG_VERSION='$version'/g' Dockerfile
+popd
+
+pushd rhel
+   url=$(get_url Dockerfile amd64 "RHEL_VERSION=7")
+   echo $url
+   curl -fL $url -o /tmp/kong
+   new_sha=$(sha256sum /tmp/kong | cut -b1-64)
+
+   sed -i.bak 's/ARG KONG_SHA256=.*/ARG KONG_SHA256=\"'$new_sha'\"/g' Dockerfile
+   sed -i.bak 's/ARG KONG_VERSION=.*/ARG KONG_VERSION='$version'/g' Dockerfile
+popd
+
 # Dockerfile.rpm
 url=$(get_url Dockerfile.rpm x86_64 "VERSION=8")
 echo $url