Add script to publish docker packages

Author: diogob

publish-docker.sh

@@ -0,0 +1,9 @@
+VERSION=$(awk '/^version: / { print $2 };' < postgres-websockets.cabal)
+docker tag diogob/postgres-websockets:latest diogob/postgres-websockets:$VERSION
+docker push diogob/postgres-websockets
+docker push diogob/postgres-websockets:$VERSION
+docker tag diogob/postgres-websockets docker.pkg.github.com/diogob/postgres-websockets/postgres-websockets:$VERSION
+docker push docker.pkg.github.com/diogob/postgres-websockets/postgres-websockets
+docker tag diogob/postgres-websockets docker.pkg.github.com/diogob/postgres-websockets/postgres-websockets:latest
+docker push docker.pkg.github.com/diogob/postgres-websockets/postgres-websockets
+docker push docker.pkg.github.com/diogob/postgres-websockets/postgres-websockets:$VERSION