Checkout the repository with git

This changes the build process even further. Instead
f using `wget` to fetch the current code, `git` is used.
This allows for faster switching between branches,
because only the differences between them have to be
fetched from the server.

But the main advantage is that the build cache can
finally be used as designed by Docker. Repetitive
builds are very fast now. This is also true between
branches and tags, as long as the `requirements.txt`
file doesn't change.

build-latest.sh

@@ -72,42 +72,6 @@ if [ "${PRERELEASE}" == "true" ]; then
   fi
 fi
 
-###
-# Compose DOCKER_TAG to build
-###
-if [ -z "$DOCKER_TARGET" ] || [ "$DOCKER_TARGET" == "main" ]; then
-  DOCKER_TAG="${VERSION}"
-else
-  DOCKER_TAG="${VERSION}-${DOCKER_TARGET}"
-fi
-
-###
-# Check if the version received is not already available on Docker Hub:
-###
-ORIGINAL_DOCKERHUB_REPO="${DOCKER_ORG-netboxcommunity}/${DOCKER_REPO-netbox}"
-DOCKERHUB_REPO="${DOCKERHUB_REPO-$ORIGINAL_DOCKERHUB_REPO}"
-
-# Bearer Token
-URL_DOCKERHUB_TOKEN="https://auth.docker.io/token?service=registry.docker.io&scope=repository:${DOCKERHUB_REPO}:pull"
-BEARER_TOKEN="$($CURL "${URL_DOCKERHUB_TOKEN}" | jq -r .token)"
-
-# Actual API call
-URL_DOCKERHUB_TAG="https://registry.hub.docker.com/v2/${DOCKERHUB_REPO}/tags/list"
-AUTHORIZATION_HEADER="Authorization: Bearer ${BEARER_TOKEN}"
-ALREADY_BUILT="$($CURL -H "${AUTHORIZATION_HEADER}" "${URL_DOCKERHUB_TAG}" | jq -e ".tags | any(.==\"${DOCKER_TAG}\")")"
-
-###
-# Only build the image if it's not already been built before
-###
-if [ -n "$DEBUG" ] || [ "$ALREADY_BUILT" == "false" ]; then
-  if [ -n "$DEBUG" ]; then
-    echo "⚠️ Would not build, because ${DOCKER_TAG} already exists on https://hub.docker.com/r/${DOCKERHUB_REPO}, but DEBUG is enabled."
-  fi
-
-  # shellcheck disable=SC2068
-  ./build.sh "${VERSION}" $@
-  exit $?
-else
-  echo "✅ ${DOCKER_TAG} already exists on https://hub.docker.com/r/${DOCKERHUB_REPO}"
-  exit 0
-fi
+# shellcheck disable=SC2068
+./build.sh "${VERSION}" $@
+exit $?