diff --git a/.drone.yml b/.drone.yml
index ab746fc..4393176 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -23,9 +23,8 @@ steps:
     commands:
       - scripts/setupEnvironment.sh
       - export TEA_URL=`curl -L https://gitea.com/gitea/tea/releases/latest | grep -e "tea.*linux-amd64\"" | cut -d '"' -f 6`
-      - sed 's/ARG.TEA_URL.*/ARG \"${TEA_URL}/\"' -i Dockerfile
+      - sed 's,ARG TEA_URL.*',"ARG TEA_URL=\"$TEA_URL\""',' -i Dockerfile
       - cp /etc/ssl/certs2/federationHQ-CA.pem  .
-      - sed 's/ARG.ORG_CA_FILE/ARG \/etc\/ssl\/certs2\/federationHQ-CA\.pem/' -i Dockerfile
       - buildah bud  --network host -t "registry.cloud.federationhq.de/tea:latest-amd64"  --arch amd64 .
       - buildah push --all registry.cloud.federationhq.de/tea:latest-amd64
 ---
@@ -54,9 +53,8 @@ steps:
     commands:
       - scripts/setupEnvironment.sh
       - export TEA_URL=`curl -L https://gitea.com/gitea/tea/releases/latest | grep -e "tea.*linux-arm64\"" | cut -d '"' -f 6`
-      - sed 's/ARG.TEA_URL.*/ARG \"${TEA_URL}/\"' -i Dockerfile
+      - sed 's,ARG TEA_URL.*',"ARG TEA_URL=\"$TEA_URL\""',' -i Dockerfile
       - cp /etc/ssl/certs2/federationHQ-CA.pem  .
-      - sed 's/ARG.ORG_CA_FILE/ARG \/etc\/ssl\/certs2\/federationHQ-CA\.pem/' -i Dockerfile
       - buildah bud  --network host -t "registry.cloud.federationhq.de/tea:latest-arm64"  --arch arm64 .
       - buildah push --all registry.cloud.federationhq.de/tea:latest-arm64
 ---
diff --git a/Dockerfile b/Dockerfile
index 93fa663..6cddcb3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM alpine:latest
 ARG TEA_URL="https://gitea.com/gitea/t0ea/releases/download/v0.9.2/tea-0.9.2-linux-amd64"
-ARG ORG_CA_FILE="/etc/ssl/certs2/federationHQ-CA.pem"
+ARG ORG_CA_FILE="federationHQ-CA.pem"
 
 RUN apk --no-cache add ca-certificates
 ADD ${ORG_CA_FILE} /usr/local/share/ca-certificates