Update docker configuration:

- .dockerignore for building
- Dockerfile created usign node-10-alpine and nginx-mainline
- docker/ scripts and templates added

.dockerignore

+# block everything
+**
+
+# allowed files
+!AGPL-3
+!CHANGELOG.md
+!README.md
+!README.png
+!.babelrc
+!.eslintignore
+!.eslintrc.js
+!.postcssrc.js
+!favicon.ico
+!index.html
+!package.json
+!yarn.lock
+
+# allowed subdirectories
+!/build/**
+!/config/**
+!/docker/**
+!/public/**
+!/static/**
+!/src/**
+
+# blocked subdirectory files
+**/*.log
+**/*~
+**/.DS_Store
+**/Thumbs.db

Dockerfile

+FROM node:10-alpine as build
+
+COPY . .
+
+RUN apk --no-cache add git && \
+    npm install && \
+    npm run build:prod
+
+FROM nginx:mainline-alpine
+
+LABEL maintainer="ops@pleroma.social" \
+    org.opencontainers.image.title="pleroma-adminfe" \
+    org.opencontainers.image.description="Pleroma-adminfe for Docker" \
+    org.opencontainers.image.authors="ops@pleroma.social" \
+    org.opencontainers.image.vendor="pleroma.social" \
+    org.opencontainers.image.documentation="https://git.pleroma.social/pleroma/pleroma-adminfe" \
+    org.opencontainers.image.licenses="AGPL-3.0" \
+    org.opencontainers.image.url="https://pleroma.social" \
+    org.opencontainers.image.revision=$VCS_REF \
+    org.opencontainers.image.created=$BUILD_DATE
+
+
+ARG DATA=/usr/share/nginx/html
+
+COPY --from=build /dist/ ${DATA}
+
+COPY ./docker/docker-entrypoint.sh /usr/local/bin/
+
+COPY ./docker/nginx.conf.tpl /etc/nginx/nginx.conf.tpl
+
+RUN apk add --no-cache gettext
+
+EXPOSE 80
+
+ENTRYPOINT ["/usr/local/bin/docker-entrypoint.sh"]
+
+CMD exec nginx -g 'daemon off;'
+

docker/docker-entrypoint.sh

+#!/bin/sh
+set -e
+envsubst "$(env | sed -e 's/=.*//' -e 's/^/\$/g')" < "/etc/nginx/nginx.conf.tpl" > "/etc/nginx/nginx.conf"
+exec "$@"

docker/nginx.conf.tpl

+user  nginx;
+worker_processes  1;
+error_log  /var/log/nginx/error.log warn;
+pid        /tmp/nginx.pid;
+events {
+    worker_connections  1024;
+}
+http {
+    client_body_temp_path /tmp/client_temp;
+    proxy_temp_path       /tmp/proxy_temp_path;
+    fastcgi_temp_path     /tmp/fastcgi_temp;
+    uwsgi_temp_path       /tmp/uwsgi_temp;
+    scgi_temp_path        /tmp/scgi_temp;
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+    access_log  /var/log/nginx/access.log  main;
+    sendfile        on;
+    keepalive_timeout  65;
+    proxy_cache_path /tmp/pleroma-media-cache levels=1:2 keys_zone=pleroma_media_cache:10m max_size=10g
+                     inactive=720m use_temp_path=off;
+    server {
+        listen 80;
+        server_name _;
+        root /usr/share/nginx/html;
+        location / {
+        try_files $uri $uri/ /index.html;
+      }
+    }
+}