Fixed the Dockerfile to work with Node 20. (#471)

Co-authored-by: Pacman Ghost <[email protected]>

Author: pacman-ghost

Dockerfile

@@ -0,0 +1,22 @@
+# NOTE: We create a temporary Docker container to build the webapp in, then copy
+# the generated distributable files to the final Docker image. This keeps the
+# final image tidy (since it doesn't contain any generated temporary artifacts),
+# and its size to a minimum.
+# NOTE: The version of Node must be kept in sync with what's in package.json.
+FROM node:20-alpine AS build
+
+# build the webapp
+WORKDIR /app/
+COPY package.json .
+RUN npm install
+COPY . .
+RUN npm run build
+
+# create the final Docker image
+# NOTE: The webapp is just a bunch of static files, so all we need is something to serve them.
+FROM nginx:1.27-alpine
+COPY docker/nginx-default.conf /etc/nginx/conf.d/default.conf
+COPY --from=build /app/dist /app
+
+EXPOSE 80
+CMD [ "nginx", "-g", "daemon off;" ]

package.json

@@ -8,6 +8,7 @@
   "description": "Emulate a BBC Micro",
   "repository": "[email protected]:mattgodbolt/jsbeeb.git",
   "version": "0.0.7",
+  "//": "If you change the version of Node, it must also be updated at the top of the Dockerfile.",
   "engines": {
     "node": "20"
   },

run-container.sh

@@ -0,0 +1,92 @@
+#!/usr/bin/env bash
+# Helper script that builds and launches the Docker container.
+
+# ---------------------------------------------------------------------
+
+function main
+{
+    # initialize
+    cd `dirname "$0"`
+    PORT=8271
+    IMAGE_TAG=latest
+    CONTAINER_NAME=jsbeeb
+    DETACH=
+    NO_BUILD=
+
+    # parse the command-line arguments
+    if [ $# -eq 0 ]; then
+        print_help
+        exit 0
+    fi
+    params="$(getopt -o p:t:d -l port:,tag:,name:,detach,,no-build,help --name "$0" -- "$@")"
+    if [ $? -ne 0 ]; then exit 1; fi
+    eval set -- "$params"
+    while true; do
+        case "$1" in
+            -p | --port)
+                PORT=$2
+                shift 2 ;;
+            -t | --tag)
+                IMAGE_TAG=$2
+                shift 2 ;;
+            --name)
+                CONTAINER_NAME=$2
+                shift 2 ;;
+            -d | --detach )
+                DETACH=--detach
+                shift 1 ;;
+            --no-build )
+                NO_BUILD=1
+                shift 1 ;;
+            --help )
+                print_help
+                exit 0 ;;
+            -- ) shift ; break ;;
+            * )
+                echo "Unknown option: $1" >&2
+                exit 1 ;;
+        esac
+    done
+
+    # build the image
+    if [ -z "$NO_BUILD" ]; then
+        echo Building the \"$IMAGE_TAG\" image...
+        docker build \
+            --tag jsbeeb:$IMAGE_TAG \
+            . 2>&1 \
+          | sed -e 's/^/  /'
+        if [ ${PIPESTATUS[0]} -ne 0 ]; then exit 10 ; fi
+        echo
+    fi
+
+    # launch the container
+    echo Launching the \"$IMAGE_TAG\" image as \"$CONTAINER_NAME\"...
+    docker run \
+        --name $CONTAINER_NAME \
+        --publish $PORT:80 \
+        $DETACH \
+        -it --rm \
+        jsbeeb:$IMAGE_TAG \
+        2>&1 \
+      | sed -e 's/^/  /'
+    exit ${PIPESTATUS[0]}
+}
+
+# ---------------------------------------------------------------------
+
+function print_help {
+    echo "`basename "$0"` {options}"
+    cat <<EOM
+  Build and launch the "jsbeeb" container.
+
+    -p  --port             Web server port number.
+    -t  --tag              Docker image tag.
+        --name             Docker container name.
+    -d  --detach           Detach from the container and let it run in the background.
+        --no-build         Launch the container as-is (i.e. without rebuilding the image first).
+EOM
+}
+
+# ---------------------------------------------------------------------
+
+main "$@"