Add gitconfig to devcontainer

.devcontainer/docker-compose.yml

@@ -6,7 +6,11 @@ services:
       context: ..
       dockerfile: ".devcontainer/Dockerfile"
     volumes:
+      # Allow git usage within container
+      - "/home/${USER}/.ssh:/home/ftuser/.ssh:ro"
+      - "/home/${USER}/.gitconfig:/home/ftuser/.gitconfig:ro"
       - ..:/freqtrade:cached
+      # Persist bash-history
       - freqtrade-vscode-server:/home/ftuser/.vscode-server
       - freqtrade-bashhistory:/home/ftuser/commandhistory
     # Expose API port