fix(ci): authenticate tramiton fetch in dashboard + mcp image builds

The main deploy after #145 failed on Deploy Dashboard and Deploy MCP: because
compliance-agent (a workspace member) depends on the private tramiton-core git
repo, cargo/dx must resolve it even when building the dashboard or mcp — and
those Dockerfiles had no git auth ("unknown SSH host key"). Deploy Agent (fixed
in #143) succeeded.

Apply the same BuildKit-secret fix to Dockerfile.dashboard (dx build) and
Dockerfile.mcp (cargo build), and pass the secret in the deploy-dashboard and
deploy-mcp jobs. Dockerfile.docs is node-only and unaffected.

Refs #118.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -217,13 +217,16 @@ jobs:
       image: docker:27-cli
     steps:
       - name: Build, push and trigger orca redeploy
+        env:
+          TRAMITON_FETCH_TOKEN: ${{ secrets.TRAMITON_FETCH_TOKEN }}
         run: |
           apk add --no-cache git curl openssl
           git init && git remote add origin "${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}.git"
           git fetch --depth=1 origin "${GITHUB_SHA}" && git checkout FETCH_HEAD
           IMAGE=registry.meghsakha.com/compliance-dashboard
           echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login registry.meghsakha.com -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin
-          docker build -f Dockerfile.dashboard -t "$IMAGE:latest" -t "$IMAGE:${GITHUB_SHA}" .
+          DOCKER_BUILDKIT=1 docker build --secret id=tramiton_token,env=TRAMITON_FETCH_TOKEN \
+            -f Dockerfile.dashboard -t "$IMAGE:latest" -t "$IMAGE:${GITHUB_SHA}" .
           docker push "$IMAGE:latest" && docker push "$IMAGE:${GITHUB_SHA}"
           PAYLOAD=$(printf '{"ref":"refs/heads/main","repository":{"full_name":"sharang/compliance-scanner-agent"},"head_commit":{"id":"%s","message":"deploy dashboard"}}' "${GITHUB_SHA}")
           SIG=$(printf '%s' "$PAYLOAD" | openssl dgst -sha256 -hmac "${{ secrets.ORCA_WEBHOOK_SECRET }}" | awk '{print $2}')
@@ -259,13 +262,16 @@ jobs:
       image: docker:27-cli
     steps:
       - name: Build, push and trigger orca redeploy
+        env:
+          TRAMITON_FETCH_TOKEN: ${{ secrets.TRAMITON_FETCH_TOKEN }}
         run: |
           apk add --no-cache git curl openssl
           git init && git remote add origin "${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}.git"
           git fetch --depth=1 origin "${GITHUB_SHA}" && git checkout FETCH_HEAD
           IMAGE=registry.meghsakha.com/compliance-mcp
           echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login registry.meghsakha.com -u "${{ secrets.REGISTRY_USERNAME }}" --password-stdin
-          docker build -f Dockerfile.mcp -t "$IMAGE:latest" -t "$IMAGE:${GITHUB_SHA}" .
+          DOCKER_BUILDKIT=1 docker build --secret id=tramiton_token,env=TRAMITON_FETCH_TOKEN \
+            -f Dockerfile.mcp -t "$IMAGE:latest" -t "$IMAGE:${GITHUB_SHA}" .
           docker push "$IMAGE:latest" && docker push "$IMAGE:${GITHUB_SHA}"
           PAYLOAD=$(printf '{"ref":"refs/heads/main","repository":{"full_name":"sharang/compliance-scanner-agent"},"head_commit":{"id":"%s","message":"deploy mcp"}}' "${GITHUB_SHA}")
           SIG=$(printf '%s' "$PAYLOAD" | openssl dgst -sha256 -hmac "${{ secrets.ORCA_WEBHOOK_SECRET }}" | awk '{print $2}')

Dockerfile.dashboard

@@ -7,7 +7,16 @@ ARG DOCS_URL=/docs
 WORKDIR /app
 COPY . .
 ENV DOCS_URL=${DOCS_URL}
-RUN dx build --release --package compliance-dashboard
+# compliance-agent (a workspace member) depends on the private tramiton-core git
+# repo, so the workspace resolve needs it even to build the dashboard.
+# Authenticate the fetch with a PAT passed as a BuildKit secret.
+RUN --mount=type=secret,id=tramiton_token \
+    if [ -s /run/secrets/tramiton_token ]; then \
+      git config --global \
+        url."https://sharang:$(cat /run/secrets/tramiton_token)@gitea.meghsakha.com/".insteadOf \
+        "ssh://git@gitea.meghsakha.com:22222/"; \
+    fi && \
+    CARGO_NET_GIT_FETCH_WITH_CLI=true dx build --release --package compliance-dashboard
 
 FROM debian:bookworm-slim
 RUN apt-get update && apt-get install -y ca-certificates libssl3 && rm -rf /var/lib/apt/lists/*

Dockerfile.mcp

@@ -2,7 +2,16 @@ FROM rust:1.94-bookworm AS builder
 
 WORKDIR /app
 COPY . .
-RUN cargo build --release -p compliance-mcp
+# compliance-agent (a workspace member) depends on the private tramiton-core git
+# repo, so the workspace resolve needs it even to build the mcp binary.
+# Authenticate the fetch with a PAT passed as a BuildKit secret.
+RUN --mount=type=secret,id=tramiton_token \
+    if [ -s /run/secrets/tramiton_token ]; then \
+      git config --global \
+        url."https://sharang:$(cat /run/secrets/tramiton_token)@gitea.meghsakha.com/".insteadOf \
+        "ssh://git@gitea.meghsakha.com:22222/"; \
+    fi && \
+    CARGO_NET_GIT_FETCH_WITH_CLI=true cargo build --release -p compliance-mcp
 
 FROM debian:bookworm-slim
 RUN apt-get update && apt-get install -y ca-certificates libssl3 && rm -rf /var/lib/apt/lists/*