added build of ubuntu image (#7)

Reviewed-on: #7

dockerfile/alpine/Dockerfile

@@ -0,0 +1,9 @@
+# https://hub.docker.com/_/alpine
+# https://endoflife.date/alpine
+FROM alpine:3.18
+
+RUN apk update && \
+  apk add --no-cache nano mc micro rsync ncdu git curl openssh-client
+COPY ./bin/ /usr/local/bin
+
+ENTRYPOINT ["sleep", "infinity"]

dockerfile/ubuntu/Dockerfile

@@ -0,0 +1,10 @@
+# https://hub.docker.com/_/alpine
+
+FROM ubuntu:22.04
+
+RUN apt-get update \
+  && apt-get install -y nano mc micro rsync ncdu git curl \
+  && rm -rf /var/lib/apt/lists/*
+COPY ./bin/ /usr/local/bin
+
+ENTRYPOINT ["sleep", "infinity"]