Update Dockerfile

Author: steelhead31

linux/jdk/alpine/src/main/packaging/Dockerfile

@@ -15,6 +15,10 @@ RUN set -eux; \
 		sudo \
 		wget
 
+# Test This
+RUN wget -O /etc/apk/keys/adoptium.rsa.pub https://packages.adoptium.net/artifactory/api/security/keypair/public/repositories/apk
+RUN echo 'https://packages.adoptium.net/artifactory/apk/alpine/main' >> /etc/apk/repositories
+
 # Create unprivileged user for building, see
 # https://github.com/hexops/dockerfile#use-a-static-uid-and-gid
 RUN adduser -D -h /home/builder builder \