Alpine images

remmina/20-remmina.sh

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+#!/usr/bin/env bash
+# Remmina config
+cat >~/.config/i3/config.d/remmina.conf <<- 'remmina.conf'
+# Open terminal
+exec --no-startup-id i3-msg 'workspace "2"; exec ${TERMINAL}'
+
+# Maximize
+for_window [class="remmina"] move container to workspace "1"
+for_window [class="${TERMINAL}"] move container to workspace "2"
+remmina.conf
+
+# Remmina startup
+install /dev/stdin ~/.config/i3/startapp.sh <<- startapp.sh
+#!/usr/bin/env bash
+# Run remmina
+while true
+do
+    remmina
+done
+startapp.sh

remmina/Dockerfile

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+# syntax = docker/dockerfile:1.2
+FROM alpine/base:i3
+USER root
+
+# Choose a terminal
+ENV TERMINAL=xterm
+ 
+# Install packages
+RUN apk add --no-cache \
+    openssh \
+    remmina \
+    ${TERMINAL}
+
+# Tigervnc
+COPY *.sh /app/init.d/
+RUN chmod +x /app/init.d/*
+
+# Reset user home directory
+USER user
+WORKDIR /home/user

remmina/build

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+#!/usr/bin/env bash
+# Docker build
+# Optional buildtag
+DOCKER_BUILDKIT=1 docker build ./. \
+    --tag ${buildtag:-alpine/remmina}