Documented multi-architecture on docker image

Dockerfile

@@ -40,6 +40,7 @@ RUN apk add --no-cache --virtual .phpize-deps $PHPIZE_DEPS && \
     docker-php-ext-enable swoole && \
     apk del .phpize-deps
 
+
 # Install shlink
 FROM base as builder
 COPY . .

docker/README.md

@@ -263,7 +263,13 @@ Once created just run shlink with the volume:
 docker run --name shlink -p 8080:8080 -v ${PWD}/my/config/dir:/etc/shlink/config/params shlinkio/shlink:stable
 ```
 
-## Multi instance considerations
+## Multi-architecture
+
+Starting on v2.3.0, Shlink's docker image is built for multiple architectures.
+
+The only limitation is that images for architectures other than `amd64` will not have support for Microsoft SQL databases, since there are no official binaries.
+
+## Multi-instance considerations
 
 These are some considerations to take into account when running multiple instances of shlink.
 

docker/build

@@ -19,13 +19,13 @@ if [[ ! -z $TRAVIS_TAG ]]; then
   [[ $TRAVIS_TAG != *"alpha"* && $TRAVIS_TAG != *"beta"* ]] && TAGS="${TAGS} -t shlinkio/shlink:stable"
 
   docker buildx build --push \
-		--build-arg SHLINK_VERSION=${TRAVIS_TAG#?} \
-		--platform linux/arm/v7,linux/arm64/v8,linux/amd64 \
+    --build-arg SHLINK_VERSION=${TRAVIS_TAG#?} \
+    --platform linux/arm/v7,linux/arm64/v8,linux/amd64 \
     ${TAGS} .
 
 # If build branch is develop, build latest (on master, when there's no tag, do not build anything)
 elif [[ "$TRAVIS_BRANCH" == 'develop' ]]; then
   docker buildx build --push \
-		--platform linux/arm/v7,linux/arm64/v8,linux/amd64 \
-		-t shlinkio/shlink:latest .
+    --platform linux/arm/v7,linux/arm64/v8,linux/amd64 \
+    -t shlinkio/shlink:latest .
 fi