Merge pull request 'fix(ci): auto-discover reachable Portainer URL from job container' (#5) from fix/runner-portainer-network into main

The act_runner on the QNAP creates an ephemeral docker bridge per job.
That network can't always reach the canonical PORTAINER_URL
(http://192.168.1.30:9000) — first deploy run failed with
'Failed to connect to 192.168.1.30 port 9000 after 130317 ms'.

New step 0 probes several candidate URLs (container's own IPs, default
gateways, then the secret value as fallback) against /api/status and
uses the first one that returns 200. The reachable host is then reused
for the DELETE+CREATE calls and the smoke-test on :3001.

.gitea/workflows/ci-cd.yaml

@@ -65,17 +65,54 @@ jobs:
       - name: Redeploy stack on Portainer
         if: github.event_name == 'workflow_dispatch' && inputs.deploy == true
         env:
-          PORTAINER_URL: ${{ secrets.PORTAINER_URL }}
           PORTAINER_TOKEN: ${{ secrets.PORTAINER_TOKEN }}
           PORTAINER_ENDPOINT_ID: ${{ secrets.PORTAINER_ENDPOINT_ID }}
           PORTAINER_STACK_ID: ${{ secrets.PORTAINER_STACK_ID }}
         run: |
           set -euo pipefail
 
+          echo "--- Step 0: auto-discover a reachable Portainer URL ---"
+          # The runner creates an ephemeral docker network per job, so the
+          # canonical PORTAINER_URL (e.g. http://192.168.1.30:9000) often isn't
+          # reachable from inside the job container. Strategy: probe every IP
+          # we can find (container's own IPs + default gateways) against
+          # :9000/api/status and use the first one that responds 200.
+          PORTAINER_URL=""
+          CANDIDATES=()
+
+          # 1) Container's own IPv4 addresses
+          for ip in $(hostname -I 2>/dev/null | tr ' ' '\n' | grep -E '^[0-9]+\.'); do
+            CANDIDATES+=("http://${ip}:9000")
+          done
+
+          # 2) Default gateways of every default route
+          while IFS= read -r gw; do
+            [ -n "$gw" ] && CANDIDATES+=("http://${gw}:9000")
+          done < <(ip -4 route show default 2>/dev/null | awk '{print $3}' | sort -u)
+
+          # 3) Fallback: secret value (in case everything else fails)
+          CANDIDATES+=("${{ secrets.PORTAINER_URL }}")
+
+          echo "Candidates: ${CANDIDATES[@]}"
+          for url in "${CANDIDATES[@]}"; do
+            code=$(curl -sS -o /dev/null -w '%{http_code}' --max-time 3 "${url}/api/status" 2>/dev/null || echo "000")
+            echo "  probe ${url}/api/status -> ${code}"
+            if [ "$code" = "200" ]; then
+              PORTAINER_URL="$url"
+              echo "  -> using ${PORTAINER_URL}"
+              break
+            fi
+          done
+
+          if [ -z "$PORTAINER_URL" ]; then
+            echo "ERROR: no candidate URL reached Portainer. Tried: ${CANDIDATES[@]}" >&2
+            exit 1
+          fi
+
           echo "--- Step 1: pre-flight (delete existing stack if present) ---"
           DELETE_HTTP_CODE=$(curl -sS -o /tmp/portainer-delete.json -w '%{http_code}' \
             -X DELETE \
-            -H "X-API-Key: ${PORTAINER_TOKEN}" \
+            -H "X-API-Key: ${PORT...EN}" \
             "${PORTAINER_URL}/api/stacks/${PORTAINER_STACK_ID}?endpointId=${PORTAINER_ENDPOINT_ID}")
           echo "DELETE HTTP ${DELETE_HTTP_CODE}"
           if [ "${DELETE_HTTP_CODE}" != "204" ] && [ "${DELETE_HTTP_CODE}" != "404" ]; then
@@ -110,10 +147,15 @@ jobs:
           echo "--- Step 4: smoke-test the freshly deployed stack ---"
           # Give the container a brief window to start before checking.
           sleep 8
+          # The Portainer host:9000 is reachable from the job container
+          # (we just proved that with the auto-discovery step above). The
+          # portfolio container itself is published on host port 3001, so
+          # smoke-test through the same host. We don't fail the job if the
+          # proxy upstream isn't reachable from the runner's network.
           HEALTH=$(curl -sS -o /dev/null -w '%{http_code}' \
             --max-time 5 \
-            "http://${PORTAINER_URL#http://}:3001/" 2>/dev/null || true)
-          echo "Health check on http://<host>:3001/ returned: ${HEALTH:-<timeout/unreachable>}"
+            "${PORTAINER_URL%:[0-9]*}:3001/" 2>/dev/null || true)
+          echo "Health check on ${PORTAINER_URL%:[0-9]*}:3001/ returned: ${HEALTH:-<timeout/unreachable>}"
           # We log but don't fail the job if 3001 isn't reachable — the upstream
           # proxy (Nginx Proxy Manager → davidaragon.impresion3d.pro) is a better
           # place to wire a hard-fail check in a future iteration.