Dev container documentation and cleanup

.devcontainer/docker-compose.yml

@@ -2,14 +2,24 @@ version: "3.7"
 
 services:
   vscode:
-    image: qmcgaw/godevcontainer
+    build: .
+    image: godevcontainer
     volumes:
       - ../:/workspace
+      # Docker socket to access Docker server
+      - /var/run/docker.sock:/var/run/docker.sock
+      # SSH directory
       - ~/.ssh:/home/vscode/.ssh
       - ~/.ssh:/root/.ssh
-      - /var/run/docker.sock:/var/run/docker.sock
+      # Git config
+      - ~/.gitconfig:/home/districter/.gitconfig
+      - ~/.gitconfig:/root/.gitconfig
+    environment:
+      - TZ=
     cap_add:
+      # For debugging with dlv
       - SYS_PTRACE
     security_opt:
+      # For debugging with dlv
       - seccomp:unconfined
     entrypoint: zsh -c "while sleep 1000; do :; done"