Create custom devcontainer

Author: ascopes

.devcontainer/Dockerfile

@@ -0,0 +1,42 @@
+# syntax=docker/dockerfile:labs
+FROM mcr.microsoft.com/devcontainers/base:debian
+
+RUN <<-SCRIPT
+  set -o errexit
+  rm -Rf ~/.oh-my-zsh
+
+  apt update
+  apt full-upgrade -qy
+  apt install -qy \
+      bash \
+      curl \
+      git \
+      nano \
+      protobuf-compiler \
+      python3 \
+      tmux \
+      vim \
+      zplug \
+      zsh
+  chsh -s "$(command -v zsh)"
+
+  # Set up ohmyzsh and change the shell to zsh
+  sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
+SCRIPT
+
+SHELL ["/usr/bin/env", "zsh", "-c"]
+
+# Configure sdkman.
+RUN <<-SCRIPT
+  set -o errexit
+  curl -s "https://get.sdkman.io" | bash
+
+  set +o errexit
+  source /root/.sdkman/bin/sdkman-init.sh
+  set -o errexit
+  
+  # Install java tooling we need
+  sdk install java
+  sdk install maven
+  sdk install mvnd
+SCRIPT

.devcontainer/devcontainer.json

@@ -1,9 +1,5 @@
 {
-  "image": "mcr.microsoft.com/devcontainers/java:dev-21",
-  "features": {
-    "ghcr.io/devcontainers/features/common-utils:2": {},
-    "ghcr.io/devcontainers-contrib/features/protoc:1": {
-      "version": "latest"
-    }
+  "build": {
+    "dockerfile": "Dockerfile"
   }
 }

.github/workflows/devcontainer.yml

@@ -0,0 +1,34 @@
+name: Build Devcontainer
+on:
+  pull_request:
+    paths:
+      - .devcontainer/**
+      - .github/workflows/devcontainer.yml
+
+  workflow_call: {}
+  workflow_dispatch: {}
+
+jobs:
+  build:
+    name: Build Devcontainer
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Build Devcontainer
+        run: |-
+          set -o errexit
+          set -o nounset
+          set -o xtrace
+
+          # Verify docker is up first.
+          docker run --rm hello-world
+
+          # Verify the devcontainer builds correctly.
+          npm install -g @devcontainers/cli
+          devcontainer build \
+              --workspace-folder . \
+              --push false \
+              --image-name ghcr.io/ascopes/protobuf-maven-plugin/devcontainer:latest

scripts/bump-versions.sh

@@ -6,7 +6,7 @@
 ###
 set -o errexit
 set -o nounset
-[[ -n ${DEBUG+undef} ]] && set -o xtrace
+[[ -v DEBUG ]] && set -o xtrace
 
 function usage() {
   echo "USAGE: ${BASH_SOURCE[0]} [ -h | -m | -M ]"

scripts/install-protoc-to-github-runner.sh

@@ -8,7 +8,7 @@
 ###
 set -o errexit
 set -o nounset
-[[ -n ${DEBUG+defined} ]] && set -o xtrace
+[[ -v DEBUG ]] && set -o xtrace
 
 cd "$(dirname "${BASH_SOURCE[0]}")/.."
 echo "Checking protobuf version from pom.xml..."
@@ -52,7 +52,6 @@ readonly target=${target_dir}/protoc
 echo "${target_dir}" >> "${GITHUB_PATH}"
 export PATH="${PATH}:${target_dir}"
 
-
 echo "Downloading protoc ${version} for OS ${os_name} and CPU ${os_arch}"
 echo "Installing ${url} to ${target}"
 

scripts/site-local.sh

@@ -5,8 +5,9 @@
 ### Author: Ashley Scopes
 ###
 set -o errexit
+set -o nounset
 set -o pipefail
-[[ -n ${DEBUG+undef} ]] && set -o xtrace
+[[ -v DEBUG ]] && set -o xtrace
 
 readonly host=127.0.0.1
 readonly port=9000