ci: fix OpenResty install on Ubuntu 26.04 runners and LuaRocks in E2E

.github/workflows/ci.yaml

@@ -62,10 +62,11 @@ jobs:
           sudo luarocks install lua-resty-jit-uuid
       - name: "Install OpenResty"
         run: |
-          wget -qO - https://openresty.org/package/pubkey.gpg | sudo apt-key add -
-          sudo apt-get -y update --fix-missing
-          sudo apt-get -y install software-properties-common
-          sudo add-apt-repository -y "deb http://openresty.org/package/ubuntu $(lsb_release -sc) main"
+          # apt-key is gone on current Ubuntu runners, and OpenResty publishes apt packages
+          # only up to noble. Its packages bundle their own OpenSSL, PCRE2 and zlib, so the
+          # noble repo installs on newer Ubuntu releases too.
+          wget -qO - https://openresty.org/package/pubkey.gpg | sudo gpg --dearmor -o /usr/share/keyrings/openresty.gpg
+          echo "deb [signed-by=/usr/share/keyrings/openresty.gpg] http://openresty.org/package/ubuntu noble main" | sudo tee /etc/apt/sources.list.d/openresty.list
           sudo apt-get update
           sudo apt-get install openresty-debug
       - name: "Install test::nginx for testing"

test/e2e/nginx/Dockerfile

@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM openresty/openresty:1.17.8.2-5-alpine-fat
+FROM openresty/openresty:1.31.8.1-0-alpine-fat
 
 WORKDIR /skywalking-nginx-lua