Alpine images

base/Dockerfile

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+# syntax = docker/dockerfile:1.2
+FROM alpine:edge
+USER root
+
+# Build ARG for additional pacman packages to install (eg, openssh)
+ARG addpkg
+
+# Copy app folder
+COPY app /app
+
+# Install noVNC
+RUN printf '%s\n' 'https://dl-cdn.alpinelinux.org/alpine/edge/main/' \
+    'https://dl-cdn.alpinelinux.org/alpine/edge/community/' \
+    'https://dl-cdn.alpinelinux.org/alpine/edge/testing/' >/etc/apk/repositories \
+    && apk update \
+    && apk upgrade \
+    && apk add --no-cache ${addpkg} \
+        doas \
+        bash bash-completion \
+        novnc websockify \
+        nginx \
+    && adduser -s /bin/bash -D user \
+    && printf '%s' 'permit nopass user as root cmd /usr/sbin/nginx' >/etc/doas.conf \
+    && passwd -l root >/dev/null 2>&1 \
+    && sed '/^http {/a\ \
+   include /app/nginx/\*.conf;\n\ \
+   types_hash_max_size 4096;\n\ \
+   server_names_hash_bucket_size 128;\n' -i /etc/nginx/nginx.conf \
+    && chown -R user /app /usr/share/novnc/
+
+# Default environment
+USER user
+WORKDIR /home/user
+ENV HOME=/home/user
+ENV DISPLAY=:0
+ENV SHELL=/bin/bash
+ENV PS1="[\u@\h \W \$?]\$ "
+
+# Expose nginx port for VNC webui
+EXPOSE 6900
+
+# Docker entrypoint
+ENTRYPOINT ["/app/entrypoint"]