container: Forward env vars by prefix and source shell config from container-home

Replace hardcoded env var lists with prefix-based forwarding (OPENCODE_*,
ANTHROPIC_*, CLAUDE_*) so new env vars are picked up automatically.

Run tools through bash -l inside the container so that .bashrc, .bash_profile,
and .profile from container-home are sourced. Seed container-home with default
shell config from /etc/skel on first run if the files don't already exist.

README.md

@@ -35,9 +35,16 @@ The container home directory at `$XDG_DATA_HOME/agent-container/container-home/`
 
 ## Environment Variables
 
+Host environment variables matching the following prefixes are automatically forwarded into the container:
+
+- `OPENCODE_*` -- passed through to OpenCode
+- `ANTHROPIC_*`, `CLAUDE_*` -- passed through to Claude Code
+
+This means inline overrides work as expected: `OPENCODE_CONFIG=foo opencode`
+
+For persistent environment variables, add them to `container-home/.bashrc` (or `.bash_profile` / `.profile`). Tools run through `bash -l` inside the container, so standard shell config files are sourced automatically. Default shell config files from `/etc/skel` are seeded into the container home on first run.
+
 - `XDG_DATA_HOME`: Override default data directory (default: `~/.local/share`)
-- `ANTHROPIC_API_KEY`: Your Anthropic API key (passed through to Claude Code)
-- `ANTHROPIC_BASE_URL`: Override the API base URL (optional, passed through to Claude Code)
 
 ## Usage
 

agent-container.py

@@ -3,6 +3,7 @@
 import hashlib
 import logging
 import os
+import shlex
 import signal
 import subprocess
 import sys
@@ -69,23 +70,13 @@ class AgentContainer:
             self._run_tool(
                 "opencode",
                 args,
-                env_vars=[
-                    "OPENCODE_SERVER_PASSWORD",
-                    "OPENCODE_SERVER_USERNAME",
-                    "OPENCODE_CONFIG",
-                    "OPENCODE_CONFIG_DIR",
-                    "OPENCODE_CONFIG_CONTENT",
-                    "OPENCODE_TUI_CONFIG",
-                ],
+                env_prefixes=["OPENCODE_"],
             )
         elif command == "claude":
             self._run_tool(
                 "claude",
                 args,
-                env_vars=[
-                    "ANTHROPIC_API_KEY",
-                    "ANTHROPIC_BASE_URL",
-                ],
+                env_prefixes=["ANTHROPIC_", "CLAUDE_"],
                 extra_env={"DISABLE_AUTOUPDATER": "1"},
             )
         elif command == "update":
@@ -105,7 +96,7 @@ class AgentContainer:
         self,
         tool: str,
         args: list[str],
-        env_vars: list[str],
+        env_prefixes: list[str],
         extra_env: dict[str, str] | None = None,
     ) -> None:
         self.container_home_path.mkdir(parents=True, exist_ok=True)
@@ -143,27 +134,53 @@ class AgentContainer:
             if not self.start_container():
                 raise RuntimeError("Container failed to start after recreation")
 
+        # Seed container home with default shell config from /etc/skel
+        # (only copies files that don't already exist)
+        self._seed_home()
+
         try:
             signal.signal(signal.SIGTSTP, signal.SIG_IGN)
-            self._exec_tool(tool, args, env_vars, extra_env or {})
+            self._exec_tool(tool, args, env_prefixes, extra_env or {})
         finally:
             signal.signal(signal.SIGTSTP, signal.SIG_DFL)
             self.stop_container()
 
+    def _seed_home(self) -> None:
+        """Copy default shell config from /etc/skel into the container
+        home directory, skipping files that already exist."""
+        subprocess.run(
+            [
+                "docker",
+                "exec",
+                self.container_name,
+                "bash",
+                "-c",
+                'for f in /etc/skel/.*; do '
+                '[ -f "$f" ] && [ ! -e "$HOME/$(basename "$f")" ] && '
+                'cp "$f" "$HOME/"; done',
+            ],
+        )
+
     def _exec_tool(
-        self, tool: str, args: list[str], env_vars: list[str], extra_env: dict[str, str]
+        self,
+        tool: str,
+        args: list[str],
+        env_prefixes: list[str],
+        extra_env: dict[str, str],
     ) -> None:
         env_args: list[str] = []
 
-        # Pass through host environment variables if set
-        for var in env_vars:
-            val = os.environ.get(var)
-            if val:
-                env_args += ["-e", f"{var}={val}"]
+        # Pass through host environment variables matching any prefix
+        for key, val in os.environ.items():
+            if any(key.startswith(prefix) for prefix in env_prefixes):
+                env_args += ["-e", f"{key}={val}"]
 
         # Set additional environment variables
-        for var, val in extra_env.items():
-            env_args += ["-e", f"{var}={val}"]
+        for key, val in extra_env.items():
+            env_args += ["-e", f"{key}={val}"]
+
+        # Build the shell command with proper quoting
+        cmd_str = " ".join(shlex.quote(a) for a in [tool, *args])
 
         result = subprocess.run(
             [
@@ -174,8 +191,9 @@ class AgentContainer:
                 "-w",
                 str(self.project_path),
                 self.container_name,
-                tool,
-                *args,
+                "bash",
+                "-lc",
+                f"exec {cmd_str}",
             ],
         )
         if result.returncode != 0: