chore(devcontainer): drop requirement for docker-compose and use devc…

…ontainer.json settings directly

.devcontainer/.dockerignore

@@ -1,5 +1,4 @@
 .dockerignore
 devcontainer.json
-docker-compose.yml
 Dockerfile
 README.md

.devcontainer/README.md

@@ -9,7 +9,6 @@ It works on Linux, Windows (WSL2) and OSX.
 - [VS code](https://code.visualstudio.com/download) installed
 - [VS code dev containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) installed
 - [Docker](https://www.docker.com/products/docker-desktop) installed and running
-- [Docker Compose](https://docs.docker.com/compose/install/) installed
 
 ## Setup
 
@@ -34,14 +33,14 @@ Customizations available are notably:
 
 - Changes to the Docker image in [Dockerfile](Dockerfile)
 - Changes to VSCode **settings** and **extensions** in [devcontainer.json](devcontainer.json).
-- Change the entrypoint script by adding in [docker-compose.yml](docker-compose.yml) a bind mount to a shell script to `/root/.welcome.sh` to replace the [current welcome script](https://github.com/qdm12/godevcontainer/blob/master/shell/.welcome.sh). For example:
-
-    ```yml
-    volumes:
-      # ...
-      - ./.welcome.sh:/root/.welcome.sh:ro
-      # ...
+- Change the entrypoint script by adding in [devcontainer.json](devcontainer.json) a bind mount to a shell script to `/root/.welcome.sh` to replace the [current welcome script](https://github.com/qdm12/godevcontainer/blob/master/shell/.welcome.sh). For example:
+
+    ```json
+    {
+        "source": "/yourpath/.welcome.sh",
+        "target": "/root/.welcome.sh",
+        "type": "bind"
+    },
     ```
 
-- Change the docker container configuration in [docker-compose.yml](docker-compose.yml).
 - More customizations available are documented in the [devcontainer.json reference](https://containers.dev/implementors/json_reference/).

.devcontainer/devcontainer.json

@@ -1,16 +1,50 @@
 {
     "name": "gluetun-dev",
-    "dockerComposeFile": [
-        "docker-compose.yml"
+    // User defined settings
+    "containerEnv": {
+        "TZ": ""
+    },
+    // Fixed settings
+    "build": {
+        "dockerfile": "./Dockerfile"
+    },
+    "postCreateCommand": "~/.windows.sh && go mod download",
+    "capAdd": [
+        "NET_ADMIN", // Gluetun specific
+        "SYS_PTRACE" // for dlv Go debugging
     ],
-    "service": "vscode",
-    "runServices": [
-        "vscode"
+    "securityOpt": [
+        "seccomp=unconfined" // for dlv Go debugging
+    ],
+    "mounts": [
+        // Zsh commands history persistence
+        {
+            "source": "${localEnv:HOME}/.zsh_history",
+            "target": "/root/.zsh_history",
+            "type": "bind"
+        },
+        // Git configuration file
+        {
+            "source": "${localEnv:HOME}/.gitconfig",
+            "target": "/root/.gitconfig",
+            "type": "bind"
+        },
+        // SSH directory for Linux, OSX and WSL
+        // On Linux and OSX, a symlink /mnt/ssh <-> ~/.ssh is
+        // created in the container. On Windows, files are copied
+        // from /mnt/ssh to ~/.ssh to fix permissions.
+        {
+            "source": "${localEnv:HOME}/.ssh",
+            "target": "/mnt/ssh",
+            "type": "bind"
+        },
+        // Docker socket to access the host Docker server
+        {
+            "source": "/var/run/docker.sock",
+            "target": "/var/run/docker.sock",
+            "type": "bind"
+        }
     ],
-    "shutdownAction": "stopCompose",
-    "postCreateCommand": "~/.windows.sh && go mod download && go mod tidy",
-    "workspaceFolder": "/workspace",
-    // "overrideCommand": "",
     "customizations": {
         "vscode": {
             "extensions": [