feat: use mergerfs to create shared cache between image and host

reactive_home/Dockerfile

@@ -5,15 +5,27 @@ FROM denoland/deno:bin-$DENO_VERSION AS deno
 
 FROM $BUILD_FROM
 
+ENV DEBIAN_FRONTEND=noninteractive
+
 COPY --from=deno /deno /usr/local/bin/deno
 
+RUN apt update && \
+  apt install mergerfs -yq && \
+  rm -rf /var/lib/apt/lists/*
+
 COPY run.sh /
 COPY deno.lock /
 COPY run.ts /
 COPY loader.ts /
 COPY config.yaml /
 COPY update-import-map.ts /
+COPY get-version.ts /
+
+ENV DENO_DIR=/deno_image_cache
 
-RUN chmod a+x /run.sh
+RUN chmod a+x /run.sh && \
+  mkdir /deno_image_cache && \
+  deno cache "https://deno.land/x/reactivehome@$(deno run --allow-all /get-version.ts)/mod.ts" && \
+  deno cache /loader.ts
 
 CMD [ "/run.sh" ]

reactive_home/config.yaml

@@ -9,3 +9,8 @@ arch:
 homeassistant_api: true
 map:
   - config:rw
+devices:
+  - /dev/fuse
+apparmor: unconfined
+privileged:
+  - SYS_ADMIN

reactive_home/get-version.ts

@@ -0,0 +1,11 @@
+const versionRegex = /version: "(.+?)"/gim;
+
+const configYaml = await Deno.readTextFile("/config.yaml");
+
+const result = versionRegex.exec(configYaml);
+
+const version = result?.at?.(1);
+
+if (version) {
+  console.log(version);
+}

reactive_home/run.sh

@@ -14,5 +14,17 @@ if [[ ! -f /config/reactive-home/import_map.json ]]; then
   }" >> /config/reactive-home/import_map.json
 fi
 
-deno run --lock=/deno.lock --allow-read=/config/reactive-home/import_map.json,/config.yaml --allow-write=/config/reactive-home/import_map.json /update-import-map.ts
-deno run --lock=/deno.lock --allow-env --allow-net --allow-run --allow-sys --allow-read /run.ts --root /config/reactive-home
+mkdir -p /config/reactive-home/deno_cache/npm
+mkdir -p /config/reactive-home/deno_cache/deps
+mkdir -p /config/reactive-home/deno_cache/gen
+
+mkdir -p /deno_cache/npm
+mkdir -p /deno_cache/deps
+mkdir -p /deno_cache/gen
+
+mergerfs /deno_image_cache/npm=RO:/config/reactive-home/deno_cache/npm /deno_cache/npm
+mergerfs /deno_image_cache/deps=RO:/config/reactive-home/deno_cache/deps /deno_cache/deps
+mergerfs /deno_image_cache/gen=RO:/config/reactive-home/deno_cache/gen /deno_cache/gen
+
+DENO_DIR=/deno_cache deno run --lock=/deno.lock --allow-read=/config/reactive-home/import_map.json,/config.yaml --allow-write=/config/reactive-home/import_map.json /update-import-map.ts
+DENO_DIR=/deno_cache deno run --lock=/deno.lock --allow-env --allow-net --allow-run --allow-sys --allow-read /run.ts --root /config/reactive-home