fix: improve broken devcontainer

.devcontainer/Dockerfile

@@ -4,13 +4,15 @@
 # is released on GitHub.
 #
 
-FROM rust:1.75
+# amd64: Solana 1.17 has no prebuilt aarch64-linux binaries.
+FROM --platform=linux/amd64 rust:1.75
 
 ARG DEBIAN_FRONTEND=noninteractive
 
-ARG SOLANA_CLI="1.17.16"
+# Keep in sync with Anchor.toml.
+ARG SOLANA_CLI="1.17.34"
 ARG ANCHOR_CLI="0.29.0"
-ARG NODE_VERSION="v18.16.0"
+ARG NODE_VERSION="v20.18.0"
 
 ENV HOME="/root"
 ENV PATH="${HOME}/.cargo/bin:${PATH}"
@@ -41,17 +43,21 @@ RUN . $NVM_DIR/nvm.sh && \
     npm install -g yarn
 
 # Install Solana tools.
-RUN sh -c "$(curl -sSfL https://release.solana.com/v${SOLANA_CLI}/install)"
+RUN curl -sSfL "https://release.anza.xyz/v${SOLANA_CLI}/install" -o /tmp/solana-install.sh && \
+    sh /tmp/solana-install.sh && \
+    rm /tmp/solana-install.sh
 
 # Install anchor.
-RUN cargo install --git https://github.com/coral-xyz/anchor avm --locked --force
-RUN avm install ${ANCHOR_CLI} && avm use ${ANCHOR_CLI}
+RUN cargo install --git https://github.com/coral-xyz/anchor --tag v${ANCHOR_CLI} anchor-cli --locked
 
 # set up keypair
-RUN solana-keygen new --no-bip39-passphrase
+RUN solana-keygen new --no-bip39-passphrase && \
+    solana config set --url localhost
+
+# zsh
+RUN apt-get update -qq && apt-get install -qq zsh && \
+    sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)" "" --unattended && \
+    chsh -s /usr/bin/zsh root
 
 WORKDIR /workdir
-#be sure to add `/root/.avm/bin` to your PATH to be able to run the installed binaries
 
-# install dependencies
-RUN yarn

.devcontainer/devcontainer.json

@@ -1,3 +1,29 @@
 {
-  "build": { "dockerfile": "Dockerfile" },
+  "name": "MetaDAO Programs",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "platform": "linux/amd64"
+  },
+  "workspaceMount": "source=${localWorkspaceFolder},target=/workdir,type=bind,consistency=cached",
+  "workspaceFolder": "/workdir",
+  "remoteUser": "root",
+  "mounts": [
+    "source=metadao-target,target=/workdir/target,type=volume,consistency=delegated"
+  ],
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "rust-lang.rust-analyzer",
+        "tamasfe.even-better-toml"
+      ]
+    }
+  },
+  "forwardPorts": [8899, 8900],
+  "portsAttributes": {
+    "8899": { "label": "Solana Test Validator" },
+    "8900": { "label": "Solana Test Validator RPC" }
+  },
+  "containerEnv": {
+    "ANCHOR_WALLET": "/root/.config/solana/id.json"
+  }
 }

README.md

@@ -48,6 +48,17 @@ Before you can build and test the programs, you'll need to install the following
 - **Node.js**: 16.x or higher (tested with v23.x)
 - **Yarn**: 1.22.22 or compatible
 
+### Dev Container
+
+The repository ships a dev container with all of the above preinstalled. With Docker running, open the repo in VS Code / Zed / Cursor and choose "Reopen in Container", then:
+
+```bash
+yarn install
+anchor build
+```
+
+Note: the image is pinned to `linux/amd64`, so builds on Apple Silicon run under emulation and are slower than a native setup.
+
 ### MacOS Setup
 
 #### 1. Clone the Repository