vscode: Update devcontainer and build instructions

.devcontainer/Dockerfile

@@ -13,12 +13,10 @@ RUN groupadd --gid $USER_GID $USERNAME \
     && chmod 0440 /etc/sudoers.d/$USERNAME
 
 RUN apt update && \
-    curl -fsSL https://deb.nodesource.com/setup_lts.x | bash - && \
+    apt install -y --no-install-recommends libssl-dev musl-dev make perl curl gzip && \
-    apt update && \
+    rm -rf /var/lib/apt/lists/*
-    apt install -y --no-install-recommends nodejs libssl-dev musl-dev make perl curl 
 
 RUN RUSTFLAGS=-Ctarget-feature=-crt-static cargo install wasm-pack \
-    && npm install -g rollup \
     && rustup target add wasm32-unknown-unknown
 
 USER $USERNAME

.devcontainer/devcontainer.json

@@ -1,5 +1,8 @@
 {
 	"name": "LLDAP dev",
 	"build": { "dockerfile": "Dockerfile" },
-	"forwardPorts": [3890, 17170]
+	"forwardPorts": [
+		3890,
+		17170
+	]
 }

README.md

@@ -144,8 +144,7 @@ See https://github.com/Evantage-WS/lldap-kubernetes for a LLDAP deployment for K
 
 To compile the project, you'll need:
 
-- nodejs 16: [nodesource nodejs installation guide](https://github.com/nodesource/distributions)
+- curl and gzip: `sudo apt install curl gzip`
-- curl: `sudo apt install curl`
 - Rust/Cargo: [rustup.rs](https://rustup.rs/)
 
 Then you can compile the server (and the migration tool if you want):
@@ -161,7 +160,6 @@ To bring up the server, you'll need to compile the frontend. In addition to
 cargo, you'll need:
 
 - WASM-pack: `cargo install wasm-pack`
-- rollup.js: `npm install rollup`
 
 Then you can build the frontend files with `./app/build.sh` (you'll need to run
 this after every front-end change to update the WASM package served).