Fix/issue 20 (#23)

* Removed broken dep from dockerfile

* Updated cargo crates

* Adding workflow

* Update .github/workflows/docker-image.yml

Co-authored-by: Goostaf <[email protected]>

* updated example docker-compose to reflect what is used in prod

* updated README so others don't need to rip out their hair over why the website doesn't work after running the compose file

* Replaced u8 with u32 in order to support having the entire year as an integer, also future-proofing for 21XX :P

---------

Co-authored-by: Goostaf <[email protected]>

.github/workflows/docker-image.yml

@@ -0,0 +1,33 @@
+name: Docker Image CI
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to GitHub Container Registry
+        if: ${{ github.ref == 'refs/heads/master' }}
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build Docker image (and push on main)
+        uses: docker/[email protected]
+        with:
+          push: ${{ github.ref == 'refs/heads/master' }}
+          tags: ghcr.io/cthit/digit.chalmers.it:latest