fix(ci): isolate contract and image scans from host paths

.gitea/workflows/ci.yml

@@ -39,34 +39,20 @@ jobs:
       - name: Contract drift gate
         run: |
           docker compose -p mobilityops-ci -f compose.yaml -f compose.test.yaml run --rm \
-            -v "$PWD:/repo:ro" api python /repo/scripts/check-contracts.py
+            api python scripts/check-contracts.py
           python scripts/check-source-budgets.py
       - name: Build production API image for vulnerability scan
         run: |
           docker build --target runtime --build-arg VCS_REF="$GITHUB_SHA" \
             --tag mobilityops-api-ci --file backend/Dockerfile .
       - name: Production API image vulnerability scan (HIGH/CRITICAL)
-        uses: aquasecurity/trivy-action@a9c7b0f06e461e9d4b4d1711f154ee024b8d7ab8 # v0.36.0
+        run: bash scripts/scan-ci-image.sh mobilityops-api-ci
-        with:
-          scan-type: image
-          image-ref: mobilityops-api-ci
-          format: table
-          severity: HIGH,CRITICAL
-          exit-code: "1"
-          ignore-unfixed: true
       - name: Build production web image for vulnerability scan
         run: |
           docker build --build-arg VCS_REF="$GITHUB_SHA" \
             --tag mobilityops-web-ci frontend
       - name: Production web image vulnerability scan (HIGH/CRITICAL)
-        uses: aquasecurity/trivy-action@a9c7b0f06e461e9d4b4d1711f154ee024b8d7ab8 # v0.36.0
+        run: bash scripts/scan-ci-image.sh mobilityops-web-ci
-        with:
-          scan-type: image
-          image-ref: mobilityops-web-ci
-          format: table
-          severity: HIGH,CRITICAL
-          exit-code: "1"
-          ignore-unfixed: true
       - name: Remove CI stack
         if: always()
         run: docker compose -p mobilityops-ci -f compose.yaml -f compose.test.yaml down -v --remove-orphans

backend/Dockerfile

@@ -24,6 +24,8 @@ FROM runtime-base AS test
 COPY backend/requirements.lock ./requirements.lock
 RUN pip install --no-cache-dir -r requirements.lock
 COPY backend/tests ./tests
+COPY contracts ./contracts
+COPY scripts/check-contracts.py ./scripts/check-contracts.py
 USER app
 
 FROM runtime-base AS runtime

scripts/scan-ci-image.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+TARGET_IMAGE="${1:?usage: scan-ci-image.sh <image>}"
+TRIVY_IMAGE="aquasec/trivy@sha256:be1190afcb28352bfddc4ddeb71470835d16462af68d310f9f4bca710961a41e"
+SAFE_NAME="$(printf '%s' "$TARGET_IMAGE" | tr -cs 'A-Za-z0-9._-' '-')"
+ARCHIVE_RELATIVE="artifacts/.${SAFE_NAME}.tar"
+ARCHIVE="$ROOT/$ARCHIVE_RELATIVE"
+trap 'rm -f "$ARCHIVE"' EXIT
+
+mkdir -p "$ROOT/artifacts"
+docker image inspect "$TARGET_IMAGE" >/dev/null
+docker save --output "$ARCHIVE" "$TARGET_IMAGE"
+
+WORKSPACE_ARGS=(-v "$ROOT:/workspace:ro")
+CONTAINER_ARCHIVE="/workspace/$ARCHIVE_RELATIVE"
+if docker inspect "${HOSTNAME:-}" >/dev/null 2>&1; then
+  WORKSPACE_ARGS=(--volumes-from "$HOSTNAME")
+  CONTAINER_ARCHIVE="$ROOT/$ARCHIVE_RELATIVE"
+fi
+
+docker run --rm "${WORKSPACE_ARGS[@]}" "$TRIVY_IMAGE" image \
+  --input "$CONTAINER_ARCHIVE" \
+  --scanners vuln \
+  --severity HIGH,CRITICAL \
+  --ignore-unfixed \
+  --exit-code 1 \
+  --format table