diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..61d011e
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,8 @@
+version: 2
+updates:
+- package-ecosystem: docker
+  directory: "/"
+  schedule:
+    interval: monthly
+    time: '02:00'
+  open-pull-requests-limit: 10
diff --git a/.github/workflows/dockerimage.yml b/.github/workflows/dockerimage.yml
new file mode 100644
index 0000000..a1e2bcb
--- /dev/null
+++ b/.github/workflows/dockerimage.yml
@@ -0,0 +1,84 @@
+name: Docker Image CI
+
+on:
+  push:
+    # Publish `master` as Docker `latest` image.
+    branches:
+      - master
+      - armhf-cross
+    
+    # Publish `v1.2.3` tags as releases.
+    tags:
+      - v*
+  
+  # Run tests for any PRs.
+  pull_request:
+  
+jobs:
+  test: 
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: Build squid image
+      run: docker build . --file Dockerfile --tag b4tman/squid
+    
+    - name: Test image
+      run: docker-compose -f docker-compose.test.yml up sut
+    
+    - name: Build 'ssl-bump' image
+      run: docker build ssl-bump --tag b4tman/squid:ssl-bump
+  
+  push:
+    needs: test
+    runs-on: ubuntu-18.04
+    if: github.event_name == 'push'
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: Build squid image
+      run: docker build . --file Dockerfile --tag b4tman/squid
+    
+    - name: Build 'ssl-bump' image
+      run: docker build ssl-bump --tag b4tman/squid:ssl-bump
+    
+    - name: Log into registry
+      run: echo "${{ secrets.GITHUB_PKGS_TOKEN }}" | docker login docker.pkg.github.com -u ${{ github.actor }} --password-stdin
+    
+    - name: Push squid image
+      run: |
+        IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/squid
+      
+        # Strip git ref prefix from version
+        VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+      
+        # Strip "v" prefix from tag name
+        [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+      
+        # Use Docker `latest` tag convention
+        [ "$VERSION" == "master" ] && VERSION=latest
+      
+        echo IMAGE_ID=$IMAGE_ID
+        echo VERSION=$VERSION
+      
+        docker tag b4tman/squid $IMAGE_ID:$VERSION
+        docker push $IMAGE_ID:$VERSION
+    
+    - name: Push 'ssl-bump' image
+      run: |
+        IMAGE_ID=docker.pkg.github.com/${{ github.repository }}/ssl-bump
+      
+        # Strip git ref prefix from version
+        VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')
+      
+        # Strip "v" prefix from tag name
+        [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')
+      
+        # Use Docker `latest` tag convention
+        [ "$VERSION" == "master" ] && VERSION=latest
+      
+        echo IMAGE_ID=$IMAGE_ID
+        echo VERSION=$VERSION
+      
+        docker tag b4tman/squid:ssl-bump $IMAGE_ID:$VERSION
+        docker push $IMAGE_ID:$VERSION
diff --git a/Dockerfile b/Dockerfile
index 63dbd30..9cb2b15 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
-FROM b4tman/armhf-alpine-qemu:3.8 as build
+FROM b4tman/armhf-alpine-qemu:latest as build
 
-ENV SQUID_VER 3.5.28
-ENV SQUID_SIG_KEY EA31CC5E9488E5168D2DCC5EB268E706FF5CF463
+ENV SQUID_VER 4.12
+ENV SQUID_SIG_KEY B06884EDB779C89B044E64E3CD6DBF8EF3B17D3E
 
 RUN [ "cross-build-start" ]
 
@@ -26,8 +26,8 @@ RUN set -x && \
 RUN set -x && \
 	mkdir -p /tmp/build && \
 	cd /tmp/build && \
-    curl -SsL http://www.squid-cache.org/Versions/v${SQUID_VER%.*.*}/${SQUID_VER%.*}/squid-${SQUID_VER}.tar.gz -o squid-${SQUID_VER}.tar.gz && \
-	curl -SsL http://www.squid-cache.org/Versions/v${SQUID_VER%.*.*}/${SQUID_VER%.*}/squid-${SQUID_VER}.tar.gz.asc -o squid-${SQUID_VER}.tar.gz.asc	
+    curl -SsL http://www.squid-cache.org/Versions/v${SQUID_VER%%.*}/squid-${SQUID_VER}.tar.gz -o squid-${SQUID_VER}.tar.gz && \
+	curl -SsL http://www.squid-cache.org/Versions/v${SQUID_VER%%.*}/squid-${SQUID_VER}.tar.gz.asc -o squid-${SQUID_VER}.tar.gz.asc
 	
 RUN set -x && \
 	cd /tmp/build && \
@@ -73,6 +73,7 @@ RUN set -x && \
 		--enable-arp-acl \
 		--enable-openssl \
 		--enable-ssl-crtd \
+		--enable-security-cert-generators="file" \
 		--enable-ident-lookups \
 		--enable-useragent-log \
 		--enable-cache-digests \
@@ -99,9 +100,12 @@ RUN set -x && \
 	make -j $(grep -cs ^processor /proc/cpuinfo) && \
 	make install
 
+RUN sed -i '1s;^;include /etc/squid/conf.d/*.conf\n;' /etc/squid/squid.conf
+RUN echo 'include /etc/squid/conf.d.tail/*.conf' >> /etc/squid/squid.conf
+
 RUN [ "cross-build-end" ]
 
-FROM b4tman/armhf-alpine-qemu:3.8
+FROM b4tman/armhf-alpine-qemu:latest
 	
 ENV SQUID_CONFIG_FILE /etc/squid/squid.conf
 ENV TZ Europe/Moscow
@@ -116,8 +120,8 @@ RUN apk add --no-cache \
 		libstdc++ \
 		heimdal-libs \
 		libcap \
-		libressl2.7-libcrypto \
-		libressl2.7-libssl \
+		libressl3.1-libcrypto \
+		libressl3.1-libssl \
 		libltdl	
 
 COPY --from=build /etc/squid/ /etc/squid/
@@ -131,15 +135,16 @@ RUN install -d -o squid -g squid \
 		/var/run/squid && \
 	chmod +x /usr/lib/squid/*
 	
-RUN echo 'include /etc/squid/conf.d/*.conf' >> "$SQUID_CONFIG_FILE" && \
-	install -d -m 755 -o squid -g squid /etc/squid/conf.d
-COPY squid-log.conf /etc/squid/conf.d/
+RUN install -d -m 755 -o squid -g squid \
+		/etc/squid/conf.d \
+		/etc/squid/conf.d.tail
+RUN touch /etc/squid/conf.d/placeholder.conf 
+COPY squid-log.conf /etc/squid/conf.d.tail/
 
 RUN	set -x && \
 	apk add --no-cache --virtual .tz alpine-conf tzdata && \ 
 	/sbin/setup-timezone -z $TZ && \
 	apk del .tz 	
-	
 
 RUN [ "cross-build-end" ]
 
@@ -148,4 +153,4 @@ EXPOSE 3128/tcp
 
 USER squid
 
-CMD ["sh", "-c", "/usr/sbin/squid -f ${SQUID_CONFIG_FILE} -z && exec /usr/sbin/squid -f ${SQUID_CONFIG_FILE} -NYCd 1"]
+CMD ["sh", "-c", "/usr/sbin/squid -f ${SQUID_CONFIG_FILE} --foreground -z && exec /usr/sbin/squid -f ${SQUID_CONFIG_FILE} --foreground -YCd 1"]
diff --git a/README.md b/README.md
index bc1a52b..9606a4e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
-[![](https://images.microbadger.com/badges/image/b4tman/squid:armhf.svg)](https://microbadger.com/images/b4tman/squid:armhf "Get your own image badge on microbadger.com")
+[![](https://images.microbadger.com/badges/image/b4tman/squid:armhf-cross.svg)](https://microbadger.com/images/b4tman/squid:armhf "Get your own image badge on microbadger.com")
+[![Dependabot Status](https://api.dependabot.com/badges/status?host=github&repo=b4tman/docker-squid)](https://dependabot.com)
+![Docker Build Status](https://img.shields.io/docker/build/b4tman/squid)
+![Docker Image CI Status](https://github.com/b4tman/docker-squid/workflows/Docker%20Image%20CI/badge.svg)
 
 # docker-squid
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 60edd50..da58f40 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,12 +1,12 @@
-version: '2'
-services:
-  squid:
-    image: 'b4tman/squid:armhf'
-    container_name: 'my-squid'
-    restart: always
-    ports:
-      - '3128:3128'
-#    environment:
-#      SQUID_CONFIG_FILE: /etc/squid/my-squid.conf
-#    volumes:
-#      - './my-squid.conf:/etc/squid/my-squid.conf:ro'
+version: '2'
+services:
+  squid:
+    image: 'b4tman/squid:armhf-cross'
+    container_name: 'my-squid'
+    restart: always
+    ports:
+      - '3128:3128'
+#    environment:
+#      SQUID_CONFIG_FILE: /etc/squid/my-squid.conf
+#    volumes:
+#      - './my-squid.conf:/etc/squid/my-squid.conf:ro'
diff --git a/squid-log.conf b/squid-log.conf
index a71be89..aa9cf25 100644
--- a/squid-log.conf
+++ b/squid-log.conf
@@ -1,4 +1,4 @@
-logfile_rotate 0
-cache_store_log none
-access_log stdio:/proc/self/fd/1
-cache_log stdio:/proc/self/fd/2
+logfile_rotate 0
+cache_store_log none
+access_log stdio:/proc/self/fd/1
+cache_log /dev/null
diff --git a/ssl-bump/Dockerfile b/ssl-bump/Dockerfile
new file mode 100644
index 0000000..bfdd7cc
--- /dev/null
+++ b/ssl-bump/Dockerfile
@@ -0,0 +1,4 @@
+FROM b4tman/squid:armhf-cross
+
+USER root
+CMD ["sh", "-c", "(test -d /var/cache/squid/ssl_db || /usr/lib/squid/security_file_certgen -c -s /var/cache/squid/ssl_db -M 4MB) && /usr/sbin/squid -f ${SQUID_CONFIG_FILE} --foreground -z && exec /usr/sbin/squid -f ${SQUID_CONFIG_FILE} --foreground -YCd 1"]
\ No newline at end of file