Add support for file editor

dockerfiles/pwm/Dockerfile

@@ -0,0 +1,44 @@
+ARG VERSION=docker:stable-dind
+FROM ${VERSION}
+
+RUN apk add --no-cache git tmux vim curl bash build-base qemu-img qemu-system-x86_64
+
+ENV GOPATH /root/go
+ENV PATH $PATH:$GOPATH
+
+# Use specific moby commit due to vendoring mismatch
+ENV MOBY_COMMIT="d9d2a91780b34b92e669bbfa099f613bd9fad6bb"
+
+RUN mkdir /root/go && apk add --no-cache go \
+    && go get -u -d github.com/moby/tool/cmd/moby && (cd $GOPATH/src/github.com/moby/tool/cmd/moby && git checkout $MOBY_COMMIT && go install) \
+    && go get -u github.com/linuxkit/linuxkit/src/cmd/linuxkit \
+    && rm -rf /root/go/pkg && rm -rf /root/go/src && rm -rf /usr/lib/go
+
+
+# Add bash completion and set bash as default shell
+RUN mkdir /etc/bash_completion.d \
+    && curl https://raw.githubusercontent.com/docker/cli/master/contrib/completion/bash/docker -o /etc/bash_completion.d/docker \
+    && sed -i "s/ash/bash/" /etc/passwd
+
+
+# Replace modprobe with a no-op to get rid of spurious warnings
+# (note: we can't just symlink to /bin/true because it might be busybox)
+RUN rm /sbin/modprobe && echo '#!/bin/true' >/sbin/modprobe && chmod +x /sbin/modprobe
+
+# Install a nice vimrc file and prompt (by soulshake)
+COPY ["sudo", "/usr/local/bin/"]
+COPY [".vimrc", ".profile", ".inputrc", ".gitconfig", "./root/"]
+COPY ["motd", "/etc/motd"]
+COPY ["daemon.json", "/etc/docker/"]
+
+# Move to our home
+WORKDIR /root
+
+
+# Remove IPv6 alias for localhost and start docker in the background ...
+CMD cat /etc/hosts >/etc/hosts.bak && \
+    sed 's/^::1.*//' /etc/hosts.bak > /etc/hosts && \
+    mount -t securityfs none /sys/kernel/security && \
+    dockerd &>/docker.log & \
+    while true ; do /bin/bash -l; done
+# ... and then put a shell in the foreground, restarting it if it exits