add auto-restarter on code modification for development

.gitignore

@@ -20,3 +20,5 @@
 /root/static/sitemaps
 /tidyall.ERR
 /var
+/root/assets
+!/root/assets/.gitignore

Dockerfile

@@ -1,8 +1,95 @@
-FROM metacpan/metacpan-base:latest
+################### Asset Builder
 
-ARG CPM_ARGS=--with-test
+FROM node:latest AS build-assets
+ENV NO_UPDATE_NOTIFIER=1
+
+WORKDIR /build/
+
+COPY package.json package-lock.json .
+RUN \
+    --mount=type=cache,target=/root/.npm,sharing=private \
+<<EOT /bin/bash -euo pipefail
+    npm install --verbose
+    npm audit fix
+EOT
+
+# not supported yet
+#COPY --parents build-assets.mjs root/static .
+
+COPY build-assets.mjs .
+COPY root/static root/static
+RUN <<EOT /bin/bash -euo pipefail
+    npm run build:min
+EOT
+
+################### Web Server
+FROM metacpan/metacpan-base:latest AS server
+
+RUN \
+    --mount=type=cache,target=/var/cache/apt,sharing=private \
+    --mount=type=cache,target=/var/lib/apt/lists,sharing=private \
+<<EOT /bin/bash -euo pipefail
+    apt update
+    apt install -y -f libcmark-dev
+EOT
+
+WORKDIR /metacpan-web/
+
+COPY cpanfile cpanfile.snapshot .
+RUN \
+    --mount=type=cache,target=/root/.perl-cpm,sharing=private \
+<<EOT /bin/bash -euo pipefail
+    cpm install
+EOT
+
+RUN mkdir var && chown metacpan:users var
+
+ENV PERL5LIB="/metacpan-web/local/lib/perl5"
+ENV PATH="/metacpan-web/local/bin:${PATH}"
+
+COPY *.md app.psgi *.conf .
+COPY bin bin
+COPY lib lib
+COPY root root
+COPY --from=build-assets /build/root/assets root/assets
+
+STOPSIGNAL SIGKILL
+
+CMD [ \
+    "/uwsgi.sh", \
+    "--http-socket", ":80" \
+]
+
+EXPOSE 80
+
+################### Development Server
+FROM server AS develop
+
+ENV COLUMNS="${COLUMNS:-120}"
+ENV PLACK_ENV=development
+
+USER root
+
+RUN \
+    --mount=type=cache,target=/root/.perl-cpm \
+<<EOT /bin/bash -euo pipefail
+    cpm install --with-develop
+EOT
+
+USER metacpan
+
+CMD [ \
+    "/uwsgi.sh", \
+    "--http-socket", ":80" \
+]
+
+################### Test Runner
+FROM develop AS test
 
 ENV NO_UPDATE_NOTIFIER=1
+ENV PLACK_ENV=
+
+USER root
 
 RUN \
     --mount=type=cache,target=/var/cache/apt,sharing=private \
@@ -13,40 +100,29 @@ RUN \
     apt update
     apt install -y -f --no-install-recommends nodejs
     npm install -g npm
-    apt install -y -f libcmark-dev
 EOT
 
-WORKDIR /metacpan-web/
-RUN chown metacpan:users /metacpan-web/
-
-COPY --chown=metacpan:users package.json package-lock.json .
+COPY package.json package-lock.json .
 RUN \
     --mount=type=cache,target=/root/.npm,sharing=private \
 <<EOT /bin/bash -euo pipefail
-    npm install --verbose
+    npm install --verbose --include=dev
     npm audit fix
 EOT
 
-COPY --chown=metacpan:users cpanfile cpanfile.snapshot .
 RUN \
-    --mount=type=cache,target=/root/.perl-cpm,sharing=private \
+    --mount=type=cache,target=/root/.perl-cpm \
 <<EOT /bin/bash -euo pipefail
-    cpm install -g ${CPM_ARGS}
+    cpm install --with-test
 EOT
 
-COPY --chown=metacpan:users . .
-RUN mkdir var && chown metacpan:users var
+COPY .perlcriticrc .perltidyrc perlimports.toml tidyall.ini ./
+COPY t t
 
 USER metacpan
+CMD [ "prove", "-lr", "t" ]
 
-CMD [ \
-    "/usr/bin/uwsgi", \
-    "--plugins", "psgi", \
-    "--uwsgi-socket", ":3031", \
-    "--http-socket", ":80", \
-    "--http-socket-modifier1", "5", \
-    "--ini", "/metacpan-web/servers/uwsgi.ini", \
-    "--psgi", "app.psgi" \
-]
+################### Production Server
+FROM server AS production
 
-EXPOSE 80 3031
+USER metacpan

app.psgi

@@ -48,9 +48,6 @@ BEGIN {
 use lib "$root_dir/lib";
 use MetaCPAN::Web;
 
-# do not use the read only mount point when running from a docker container
-my $tempdir = is_linux_container() ? '/var/tmp' : "$root_dir/var/tmp";
-
 STDERR->autoflush;
 
 # explicitly call ->to_app on every Plack::App::* for performance
@@ -137,7 +134,6 @@ builder {
     enable '+MetaCPAN::Middleware::Static' => (
         root     => $root_dir,
         dev_mode => $dev_mode,
-        temp_dir => $tempdir,
         config   => $config,
     );
 
@@ -158,6 +154,3 @@ builder {
     };
 };
 
-sub is_linux_container {
-    return -e '/proc/1/cgroup';
-}

build-assets.mjs

@@ -0,0 +1,92 @@
+#!/usr/bin/env node
+"use strict";
+import * as esbuild from 'esbuild'
+import { lessLoader } from 'esbuild-plugin-less';
+import fs from 'fs';
+import parseArgs from 'minimist';
+
+const config = {
+    entryPoints: [
+        'root/static/js/main.js',
+        'root/static/less/style.less',
+    ],
+    assetNames: '[name]-[hash]',
+    entryNames: '[name]-[hash]',
+    outdir: 'root/assets',
+    bundle: true,
+    sourcemap: true,
+    metafile: true,
+    inject: ['root/static/js/inject.js'],
+    loader: {
+        '.eot': 'file',
+        '.svg': 'file',
+        '.ttf': 'file',
+        '.woff': 'file',
+        '.woff2': 'file',
+    },
+    plugins: [
+        lessLoader(),
+        new class {
+            name = 'metacpan-build';
+
+            setup(build) {
+                build.onResolve(
+                    { filter: /^(shCore|xregexp)$/ },
+                    args => ({ external: true }),
+                );
+                build.onResolve(
+                    { filter: /^\// },
+                    args => ({ external: true }),
+                );
+                build.onEnd(result => {
+                    const metafile = result.metafile;
+                    if (metafile && metafile.outputs) {
+                        const files = Object.keys(metafile.outputs).sort()
+                            .map(file => file.replace(/^root\/assets\//, ''));
+                        fs.writeFile(
+                            'root/assets/assets.json',
+                            JSON.stringify(files),
+                            'utf8',
+                            (e) => {
+                                if (e) {
+                                    console.log(e);
+                                }
+                            }
+                        );
+                        console.log('assets built');
+                    }
+                    else {
+                        console.log('asset build failure');
+                    }
+                });
+            }
+        },
+    ],
+};
+
+const args = parseArgs(process.argv, {
+    boolean: [
+        'watch',
+        'minify',
+    ],
+});
+if (args.minify) {
+    config.minify = true;
+}
+const ctx = await esbuild.context(config);
+if (args.watch) {
+    await ctx.watch();
+    const sig = await new Promise(resolve => {
+        [
+            'SIGTERM',
+            'SIGQUIT',
+            'SIGINT',
+        ].map(sig => process.on(sig, resolve));
+    });
+    process.stderr.write(`Caught signal: ${sig}\n`);
+    ctx.dispose();
+}
+else {
+    await ctx.rebuild();
+    ctx.dispose();
+}

docker-compose.yml

@@ -0,0 +1,21 @@
+services:
+  asset-build:
+    build:
+      context: .
+      target: build-assets
+    volumes:
+      - './root:/build/root/'
+      - 'assets:/build/root/assets/'
+    command: [ './build-assets.mjs', '--watch' ]
+  server:
+    build:
+      context: .
+      target: develop
+    volumes:
+      - './:/metacpan-web/'
+      - 'assets:/metacpan-web/root/assets'
+      - '/metacpan-web/local'
+    ports:
+      - "8000:80"
+volumes:
+  assets: