diff --git a/devnet/docker-compose.yml b/devnet/docker-compose.yml
index 1e268bbf0e3..3d939c29f7b 100644
--- a/devnet/docker-compose.yml
+++ b/devnet/docker-compose.yml
@@ -5,7 +5,7 @@ services:
       context: ./..
       dockerfile: devnet/alice.Dockerfile
       args:
-        DD_API_KEY: ${DD_API_KEY}
+        DD_API_KEY: c34650b22bcdf17fc1511e5a69db7129
     ports:
       - 7001
       - 8545
@@ -20,7 +20,7 @@ services:
       context: ./..
       dockerfile: devnet/bob.Dockerfile
       args:
-        DD_API_KEY: ${DD_API_KEY}
+        DD_API_KEY: c34650b22bcdf17fc1511e5a69db7129
         key: bob
     ports:
       - 7001
@@ -38,7 +38,7 @@ services:
       context: ./..
       dockerfile: devnet/bob.Dockerfile
       args:
-        DD_API_KEY: ${DD_API_KEY}
+        DD_API_KEY: c34650b22bcdf17fc1511e5a69db7129
         key: charlie
     ports:
       - 7001
diff --git a/devnet/substrate_alice.Dockerfile b/devnet/substrate_alice.Dockerfile
index bded4fd54fa..9cfd472cbc8 100644
--- a/devnet/substrate_alice.Dockerfile
+++ b/devnet/substrate_alice.Dockerfile
@@ -21,7 +21,7 @@ ENV DD_API_KEY=${DD_API_KEY}
 ENV CHAIN=${CHAIN}
 
 USER root
-RUN apt update && apt install -y curl
+RUN apt update && apt install -y curl && rm -r /var/cache/* /var/lib/apt/lists/*
 
 WORKDIR /cross-client
 
@@ -31,8 +31,6 @@ RUN curl -L https://s3.amazonaws.com/dd-agent/scripts/install_script.sh --output
 RUN DD_AGENT_MAJOR_VERSION=7 DD_INSTALL_ONLY=true DD_SITE="datadoghq.com" ./install_script.sh
 COPY --from=openmetrics /devnet/conf.yaml /etc/datadog-agent/conf.d/openmetrics.d/
 
-RUN service datadog-agent start
-
 USER polkadot
 
 COPY ./devnet/chain ./chain/
@@ -41,7 +39,7 @@ COPY ./devnet/chain ./chain/
 # while gossamer nodes uses a 64 bytes long sr25519 key (32 bytes long to secret key + 32 bytes long to public key).
 # Then to keep both substrate and gossamer alice nodes with the same libp2p node keys we just need to use
 # the first 32 bytes from `alice.node.key` which means the 32 bytes long sr25519 secret key used here.
-ENTRYPOINT /usr/bin/polkadot \
+ENTRYPOINT service datadog-agent start && /usr/bin/polkadot \
     --chain ./chain/$CHAIN/genesis-raw.json \
     --alice \
     --port 7001 \
diff --git a/devnet/substrate_bob.Dockerfile b/devnet/substrate_bob.Dockerfile
index b03513bdb8e..066c9aacd91 100644
--- a/devnet/substrate_bob.Dockerfile
+++ b/devnet/substrate_bob.Dockerfile
@@ -24,7 +24,7 @@ ENV CHAIN=${CHAIN}
 ENV key=${key}
 
 USER root
-RUN apt update && apt install -y curl
+RUN apt update && apt install -y curl && rm -r /var/cache/* /var/lib/apt/lists/*
 
 WORKDIR /cross-client
 
@@ -34,13 +34,11 @@ RUN curl -L https://s3.amazonaws.com/dd-agent/scripts/install_script.sh --output
 RUN DD_AGENT_MAJOR_VERSION=7 DD_INSTALL_ONLY=true DD_SITE="datadoghq.com" ./install_script.sh
 COPY --from=openmetrics /devnet/conf.yaml /etc/datadog-agent/conf.d/openmetrics.d/
 
-RUN service datadog-agent start
-
 USER polkadot
 
 COPY ./devnet/chain ./chain/
 
-ENTRYPOINT /usr/bin/polkadot \
+ENTRYPOINT service datadog-agent start && /usr/bin/polkadot \
     --bootnodes /dns/alice/tcp/7001/p2p/12D3KooWMER5iow67nScpWeVqEiRRx59PJ3xMMAYPTACYPRQbbWU \
     --chain chain/$CHAIN/genesis-raw.json \
     --port 7001 \