cc65 pipeline base.

Dockerfile

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+FROM alpine:latest
+
+LABEL description="This is a cc65 Docker container intended to be used for build pipelines."
+
+ENV VERSION="V2.16"
+
+RUN apk add --no-cache build-base && \
+    wget -P /tmp https://github.com/cc65/cc65/archive/${VERSION}.tar.gz && \
+    cd /tmp && \
+    tar xzf *.tar.gz && \
+    cd cc65* && \
+    make && \
+    env prefix=/usr/local make install && \
+    cd - && \
+    rm -rf *.tar.gz cc65* && \
+    apk del --no-cache build-base && \
+    apk add --no-cache make

README.md

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+# cc65 build agent
+
+This Docker image is intended to be used in a build pipeline to build
+6502/65c02/65816 projects.  It is simply a blend of
+[Alpine Linux](https://alpinelinux.org/) and
+[cc65](http://cc65.github.io/cc65/).
+
+In an effort to keep the image small, it currently only contains (beyond the base Alpine Linux Docker image) `make` and `cc65`.