chore: install TagLib in devcontainer Dockerfile

Move TagLib installation from postCreateCommand script into the devcontainer Dockerfile to leverage Docker layer caching and simplify setup.\n\nChanges:\n- Install cross-taglib v2.1.1-1 directly in Dockerfile using TARGETARCH for multi-arch support (amd64/arm64).\n- Remove redundant libtag1-dev apt dependency; keep ffmpeg only.\n- Add CROSS_TAGLIB_VERSION as a build arg for consistency with CI/Makefile.\n- Remove postCreateCommand from devcontainer.json and delete install-taglib.sh script.\n\nWhy:\n- Avoid re-downloading TagLib on each container create; benefit from cached image layers.\n- Reduce redundancy and potential version mismatch between apt libtag and cross-taglib.\n- Keep devcontainer aligned with production build approach and CI settings.

.devcontainer/Dockerfile

@@ -9,12 +9,19 @@ ARG INSTALL_NODE="true"
 ARG NODE_VERSION="lts/*"
 RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "source /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
 
-# [Optional] Uncomment this section to install additional OS packages.
+# Install additional OS packages
 RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
-    && apt-get -y install --no-install-recommends libtag1-dev ffmpeg
+    && apt-get -y install --no-install-recommends ffmpeg
 
-# [Optional] Uncomment the next line to use go get to install anything else you need
-# RUN go get -x <your-dependency-or-tool>
+# Install TagLib from cross-taglib releases
+ARG CROSS_TAGLIB_VERSION="2.1.1-1"
+ARG TARGETARCH
+RUN DOWNLOAD_ARCH="linux-${TARGETARCH}" \
+    && wget -q "https://github.com/navidrome/cross-taglib/releases/download/v${CROSS_TAGLIB_VERSION}/taglib-${DOWNLOAD_ARCH}.tar.gz" -O /tmp/cross-taglib.tar.gz \
+    && tar -xzf /tmp/cross-taglib.tar.gz -C /usr --strip-components=1 \
+    && mv /usr/include/taglib/* /usr/include/ \
+    && rmdir /usr/include/taglib \
+    && rm /tmp/cross-taglib.tar.gz /usr/provenance.json
 
 # [Optional] Uncomment this line to install global node packages.
 # RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1

.devcontainer/devcontainer.json

@@ -7,7 +7,8 @@
 			"VARIANT": "1.25",
 			// Options
 			"INSTALL_NODE": "true",
-			"NODE_VERSION": "v24"
+			"NODE_VERSION": "v24",
+			"CROSS_TAGLIB_VERSION": "2.1.1-1"
 		}
 	},
 	"workspaceMount": "",
@@ -54,12 +55,10 @@
 		4533,
 		4633
 	],
-	// Use 'postCreateCommand' to run commands after the container is created.
-	// "postCreateCommand": "make setup-dev",
 	// Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
 	"remoteUser": "vscode",
 	"remoteEnv": {
 		"ND_MUSICFOLDER": "./music",
 		"ND_DATAFOLDER": "./data"
 	}
-}
+}