Update Docker image and remove GPG script sourcing

Author: cjneasbi

.ci.deploy.sh

@@ -45,8 +45,8 @@ docker run --rm -v "${PWD}":/usr/src/build \
                 -e CI_DEPLOY_PASSWORD \
                 -e GPG_KEY_NAME \
                 -e GPG_PASSPHRASE \
-                maven:3.6-jdk-"${JDK_VERSION}" \
-                /bin/bash -c "source .ci.prepare-ssh-gpg.sh && cd dockerfile-image-update && mvn --quiet --batch-mode deploy -P release scm:tag -Drevision=${NEW_PATCH_VERSION}"
+                maven:3.6-openjdk-"${JDK_VERSION}" \
+                /bin/bash -c "cd dockerfile-image-update && mvn --quiet --batch-mode deploy -P release scm:tag -Drevision=${NEW_PATCH_VERSION}"
 
 # Get MVN_VERSION
 MVN_VERSION=$(cat ./dockerfile-image-update/target/classes/version.txt)