Prepare for 2.8.0 release of Memgraph (#218)

* add version 2.8 and self-hosted release workflow

* revert self-hosted workflow

* change tag syntax

.github/workflows/docker_publish.yml

@@ -2,17 +2,17 @@ name: Publish Docker image
 on:
   push:
     tags:
-      - v*.*.*
-      - v*.*
+      - v*.*-memgraph-*.*
+      - v*.*.*-memgraph-*.*
 
 jobs:
   build_and_release_docker:
     name: Build & release Docker image with tag
-    runs-on:  ubuntu-latest
+    runs-on: ubuntu-latest
     env:
       DOCKER_ORGANIZATION_NAME: memgraph
       DOCKER_REPOSITORY_NAME: memgraph-mage
-      MEMGRAPH_VERSION: 2.7.0
+      MEMGRAPH_VERSION: 2.8.0
     steps:            
       - name: Checkout repository and submodules
         uses: actions/checkout@v3

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on:  ubuntu-latest
     env:
-      MEMGRAPH_VERSION: 2.7.0
+      MEMGRAPH_VERSION: 2.8.0
     strategy:
       matrix:
         architecture: ["amd64", "arm64"]

.gitmodules

@@ -1,4 +1,4 @@
 [submodule "cpp/memgraph"]
 	path = cpp/memgraph
 	url = https://github.com/memgraph/memgraph.git
-	branch = release/2.7
+	branch = release/2.8

Dockerfile

@@ -4,7 +4,7 @@ FROM debian:bullseye as base
 
 USER root
 
-ARG MG_VERSION=2.7.0
+ARG MG_VERSION=2.8.0
 ARG PY_VERSION_DEFAULT
 ENV MG_VERSION ${MG_VERSION}
 ENV PY_VERSION ${PY_VERSION_DEFAULT}

Dockerfile.cugraph

@@ -2,7 +2,7 @@ ARG CUGRAPH_VERSION=22.02
 ARG CUDA_VERSION=11.5
 ARG CUDA_VERSION_MINOR=11.5.2
 ARG PY_VERSION=3.8
-ARG MG_VERSION=2.7.0
+ARG MG_VERSION=2.8.0
 
 FROM rapidsai/rapidsai:${CUGRAPH_VERSION}-cuda${CUDA_VERSION}-runtime-ubuntu20.04-py${PY_VERSION} as cugraph-dev