feature: Add docker creation

.github/workflows/docker.yml

@@ -0,0 +1,22 @@
+name: Publish Docker image
+on:
+  release:
+    types: [published]
+jobs:
+  push_to_registry:
+    name: Push Docker image to GitHub Packages
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v2
+      - name: Login to Registry
+        uses: docker/login-action@v1
+        with:
+          registry: docker.pkg.github.com
+          username: cylon-x
+          password: ${{ secrets.DOCKER_TOKEN }}
+      - uses: docker/build-push-action@v2
+        with:
+         push: true
+         tags: lcsb-biocore/gigasom:latest
+

Dockerfile

@@ -0,0 +1,82 @@
+FROM debian:buster-slim
+
+#COPY Project.toml /Project.toml
+
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		ca-certificates \
+# ERROR: no download agent available; install curl, wget, or fetch
+		curl \
+        unzip \
+        git \
+        git-lfs \
+	; \
+	rm -rf /var/lib/apt/lists/*
+
+ENV JULIA_PATH /usr/local/julia
+ENV PATH $JULIA_PATH/bin:$PATH
+
+# https://julialang.org/juliareleases.asc
+# Julia (Binary signing key) <buildbot@julialang.org>
+ENV JULIA_GPG 3673DF529D9049477F76B37566E3C7DC03D6E495
+
+# https://julialang.org/downloads/
+ENV JULIA_VERSION 1.5.3
+
+RUN set -eux; \
+	\
+	savedAptMark="$(apt-mark showmanual)"; \
+	if ! command -v gpg > /dev/null; then \
+		apt-get update; \
+		apt-get install -y --no-install-recommends \
+			gnupg \
+			dirmngr \
+            unzip \
+            git \
+            git-lfs \
+		; \
+		rm -rf /var/lib/apt/lists/*; \
+	fi; \
+	\
+# https://julialang.org/downloads/#julia-command-line-version
+# https://julialang-s3.julialang.org/bin/checksums/julia-1.4.0.sha256
+# this "case" statement is generated via "update.sh"
+	dpkgArch="$(dpkg --print-architecture)"; \
+	case "${dpkgArch##*-}" in \
+# amd64
+		amd64) tarArch='x86_64'; dirArch='x64'; sha256='f190c938dd6fed97021953240523c9db448ec0a6760b574afd4e9924ab5615f1' ;; \
+# arm64v8
+		arm64) tarArch='aarch64'; dirArch='aarch64'; sha256='3d6641b61b00415fa52a616a61bbd91dbbb1b4e6e9c61b7941710ed6ff720cb4' ;; \
+# i386
+		i386) tarArch='i686'; dirArch='x86'; sha256='b265144f136dcaf2336b5abc8d18ae405ad5834de058a0338a4d020bede2fe47' ;; \
+		*) echo >&2 "error: current architecture ($dpkgArch) does not have a corresponding Julia binary release"; exit 1 ;; \
+	esac; \
+	\
+	folder="$(echo "$JULIA_VERSION" | cut -d. -f1-2)"; \
+	curl -fL -o julia.tar.gz.asc "https://julialang-s3.julialang.org/bin/linux/${dirArch}/${folder}/julia-${JULIA_VERSION}-linux-${tarArch}.tar.gz.asc"; \
+	curl -fL -o julia.tar.gz     "https://julialang-s3.julialang.org/bin/linux/${dirArch}/${folder}/julia-${JULIA_VERSION}-linux-${tarArch}.tar.gz"; \
+	\
+	echo "${sha256} *julia.tar.gz" | sha256sum -c -; \
+	\
+	export GNUPGHOME="$(mktemp -d)"; \
+	gpg --batch --keyserver ha.pool.sks-keyservers.net --recv-keys "$JULIA_GPG"; \
+	gpg --batch --verify julia.tar.gz.asc julia.tar.gz; \
+	command -v gpgconf > /dev/null && gpgconf --kill all; \
+	rm -rf "$GNUPGHOME" julia.tar.gz.asc; \
+	\
+	mkdir "$JULIA_PATH"; \
+	tar -xzf julia.tar.gz -C "$JULIA_PATH" --strip-components 1; \
+	rm julia.tar.gz; \
+	\
+	apt-mark auto '.*' > /dev/null; \
+	[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark; \
+	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
+	\
+# smoke test
+	julia --version; \
+    mkdir -p ~/.julia/environments/v${folder}; \
+    cd ~/.julia/environments/v${folder}; \
+    julia -e 'import Pkg; Pkg.add("GigaSOM"); Pkg.resolve(); Pkg.status(); Pkg.instantiate();'
+
+CMD ["julia"]