[dockerhub] Added action for publishing docker image (#1421)

## Summary
added an action to build and publish an image containing devbox and nix
installations to dockerhub

## How was it tested?
Not tested yet

Author: mohsenari

.github/workflows/docker-image-release.yml

@@ -0,0 +1,31 @@
+name: docker-image-release
+
+on: workflow_dispatch
+
+jobs:
+  docker-image-build-push:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+      - name: Build and push default
+        uses: docker/build-push-action@v4
+        with:
+          context: ./internal/impl/generate/tmpl/
+          file: ./internal/impl/generate/tmpl/DevboxImageDockerfile
+          push: true
+          tags: jetpackio/devbox:latest
+      - name: Build and push root user
+        uses: docker/build-push-action@v4
+        with:
+          context: ./internal/impl/generate/tmpl/
+          file: ./internal/impl/generate/tmpl/DevboxImageDockerfileRootUser
+          push: true
+          tags: jetpackio/devbox-root-user:latest

internal/impl/generate/tmpl/DevboxImageDockerfile

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+FROM debian:stable-slim
+
+# Step 1: Installing dependencies
+RUN apt-get update
+RUN apt-get -y install bash binutils git xz-utils wget sudo
+
+# Step 1.5: Setting up devbox user
+ENV DEVBOX_USER=devbox
+RUN adduser $DEVBOX_USER
+RUN usermod -aG sudo $DEVBOX_USER
+RUN echo "devbox ALL=(ALL:ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/$DEVBOX_USER
+USER $DEVBOX_USER
+
+# Step 2: Installing Nix
+RUN wget --output-document=/dev/stdout https://nixos.org/nix/install | sh -s -- --no-daemon
+RUN . ~/.nix-profile/etc/profile.d/nix.sh
+
+ENV PATH="/home/${DEVBOX_USER}/.nix-profile/bin:$PATH"
+
+# Step 3: Installing devbox
+RUN wget --quiet --output-document=/dev/stdout https://get.jetpack.io/devbox   | bash -s -- -f
+RUN chown -R "${DEVBOX_USER}:${DEVBOX_USER}" /usr/local/bin/devbox
+
+CMD ["devbox", "version"]

internal/impl/generate/tmpl/DevboxImageDockerfileRootUser

@@ -0,0 +1,16 @@
+FROM debian:stable-slim
+
+# Step 1: Installing dependencies
+RUN apt-get update
+RUN apt-get -y install bash binutils git xz-utils wget sudo
+
+# Step 2: Installing Nix
+RUN wget --output-document=/dev/stdout https://nixos.org/nix/install | sh -s -- --daemon
+RUN . ~/.nix-profile/etc/profile.d/nix.sh
+
+ENV PATH="/root/.nix-profile/bin:$PATH"
+
+# Step 3: Installing devbox
+RUN wget --quiet --output-document=/dev/stdout https://get.jetpack.io/devbox   | bash -s -- -f
+
+CMD ["devbox", "version"]