fix(opencode): harden runtime defaults

apps/sim/lib/opencode/client.ts

@@ -4,6 +4,7 @@ import { createOpencodeClient } from '@opencode-ai/sdk'
 const OPEN_CODE_HOST = 'opencode'
 const OPEN_CODE_LOCALHOST = '127.0.0.1'
 const OPEN_CODE_DEFAULT_PORT = '4096'
+const IS_DOCKER_RUNTIME = existsSync('/.dockerenv')
 
 function getOpenCodeBasicAuthHeader(): string {
   const username = process.env.OPENCODE_SERVER_USERNAME
@@ -23,7 +24,7 @@ export function getOpenCodeBaseUrl(): string {
   }
 
   const port = process.env.OPENCODE_PORT || OPEN_CODE_DEFAULT_PORT
-  const host = existsSync('/.dockerenv') ? OPEN_CODE_HOST : OPEN_CODE_LOCALHOST
+  const host = IS_DOCKER_RUNTIME ? OPEN_CODE_HOST : OPEN_CODE_LOCALHOST
 
   return `http://${host}:${port}`
 }

docker/opencode.Dockerfile

@@ -1,5 +1,7 @@
 FROM node:22-bookworm-slim
 
+ARG OPENCODE_AI_VERSION=0.8.0
+
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     --mount=type=cache,target=/var/lib/apt,sharing=locked \
     apt-get update && apt-get install -y --no-install-recommends \
@@ -12,7 +14,7 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
     && update-ca-certificates \
     && rm -rf /var/lib/apt/lists/*
 
-RUN npm install -g opencode-ai
+RUN npm install -g "opencode-ai@${OPENCODE_AI_VERSION}"
 
 RUN groupadd -g 1001 opencode && \
     useradd -m -u 1001 -g opencode -s /bin/bash opencode

docker/opencode/git-askpass.sh

@@ -19,7 +19,7 @@ if [[ "$prompt" == Password* ]]; then
     exit 0
   fi
 
-  printf '%s\n' "${GIT_TOKEN:-${GITHUB_TOKEN:-}}"
+  printf '%s\n' "${GIT_TOKEN:-}"
   exit 0
 fi