Update Dockerfile (#3293)

services/porter_cli_container/Dockerfile

@@ -2,7 +2,9 @@ FROM ubuntu:latest
 
 COPY get-porter-cli.sh /scratch/
 
-RUN apt-get update && apt-get install -y curl unzip git
+RUN apt-get update && apt-get install -y unzip git
+
+RUN apt-get install --allow-downgrades -y curl=7.81.0-1 libcurl4=7.81.0-1
 
 ARG VERSION