Docker: persist API Server state, wire up OCPP, drop legacy env names

Audited every Dockerfile, compose file and .env.example against the code
they deploy. Four things had drifted:

Persistence. The API Server writes plugins.json and rewrites .env (the
panel's retarget-PocketBase flow) relative to its working directory,
which was a root-owned /app while the process runs as the app user - so
both writes failed, and no volume was declared to keep them anyway. The
binary moves to /usr/local/bin and the working directory becomes a /data
volume owned by app. The AIO image gets the same via directory=/data on
its supervisord program.

OCPP. Charger control was undeployable: OCPP_REQUIRE_TLS defaults to true
and appeared in no Docker file, so a charger dialling the plain-HTTP
/ocpp/{serial} was rejected with nothing explaining why. Both OCPP vars
are now threaded through the compose files and env examples, with the
reasoning (the per-charger control token rides in a Basic-auth header).

CORS. API Server/docker-compose.yml defaulted to localhost:5173, the Vite
dev port, where every other file uses 8090.

Env names. .env.example has called PB_URL/PB_ADMIN_*/PORT legacy for a
while, but the Docker layer still used them. Container-side names are now
POCKETBASE_*/API_ADDR; the .env keys operators set stay PB_ADMIN_* so
existing .env files keep working.

Left alone deliberately: alpine:latest stays unpinned (cannot verify
current tags or test the build from here), and the golang/node bases
already match go.mod and Vite 8's floor.

Validated as YAML only - there is no Docker CLI on this machine, so no
image was built and the /data ownership fix follows standard volume
semantics rather than an observed run.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Docker AIO/docker-compose.yml

@@ -30,12 +30,21 @@ services:
       DRIVERVAULT_SUPERADMIN_EMAIL: "${DRIVERVAULT_SUPERADMIN_EMAIL:-}"
       DRIVERVAULT_SUPERADMIN_PASSWORD: "${DRIVERVAULT_SUPERADMIN_PASSWORD:-}"
       DRIVERVAULT_SUPERADMIN_NAME: "${DRIVERVAULT_SUPERADMIN_NAME:-Administrator}"
+      # OCPP charger control (Anker Solix). This image serves plain HTTP, so a
+      # charger can only connect when TLS is terminated in front of it (set
+      # OCPP_PUBLIC_URL to the public wss:// base) — or, on a trusted network,
+      # with OCPP_REQUIRE_TLS=false.
+      OCPP_REQUIRE_TLS: "${OCPP_REQUIRE_TLS:-true}"
+      OCPP_PUBLIC_URL: "${OCPP_PUBLIC_URL:-}"
     ports:
       - "${WEB_PORT:-8090}:80"    # Web App
       - "${PB_PORT:-8070}:8070"   # PocketBase admin UI / API
-      - "${API_PORT:-8080}:8080"  # API Server + embedded API web panel (root /)
+      - "${API_PORT:-8080}:8080"  # API Server + panel (root /) + /ocpp/{serial}
     volumes:
       - pb_data:/pb/pb_data
+      # plugins.json + the .env the panel writes back.
+      - api_data:/data
 
 volumes:
   pb_data:
+  api_data: