optimize meilisearch uffizzi build

even though docker cache was being used earlier for uffizzi builds,
seems like the cache layers weren't persisting. This commit adds changes
to move meilisearch building outside the dockerfile so that we can
use the rust cache action. We are also building to the musl target
so that the binary for meilisearch which is created can be used for
the uffizzi ttyd image which uses alpine.

.github/workflows/uffizzi-build.yml

@@ -14,6 +14,26 @@ jobs:
       - name: checkout
         uses: actions/checkout@v3
 
+      - run: sudo apt-get install musl-tools
+
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+          target: x86_64-unknown-linux-musl
+
+      - name: Cache dependencies
+        uses: Swatinem/rust-cache@v2.2.0
+
+      - name: Run cargo check without any default features
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --target x86_64-unknown-linux-musl --release 
+      
+      - name: Remove dockerignore so we can use the target folder in our docker build
+        run: rm -f .dockerignore
+
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2